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cxgb3 - SGE doorbell overflow warning
[linux-2.6/sactl.git] / drivers / net / hp100.c
blob8caa591c56494f486461dd831a152bf09d229bb1
1 /*
2 ** hp100.c
3 ** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
4 **
5 ** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
6 **
7 ** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
8 ** Extended for new busmaster capable chipsets by
9 ** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
10 **
11 ** Maintained by: Jaroslav Kysela <perex@suse.cz>
12 **
13 ** This driver has only been tested with
14 ** -- HP J2585B 10/100 Mbit/s PCI Busmaster
15 ** -- HP J2585A 10/100 Mbit/s PCI
16 ** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
17 ** -- HP J2973A 10 Mbit/s PCI 10base-T
18 ** -- HP J2573 10/100 ISA
19 ** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
20 ** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
21 **
22 ** but it should also work with the other CASCADE based adapters.
23 **
24 ** TODO:
25 ** - J2573 seems to hang sometimes when in shared memory mode.
26 ** - Mode for Priority TX
27 ** - Check PCI registers, performance might be improved?
28 ** - To reduce interrupt load in busmaster, one could switch off
29 ** the interrupts that are used to refill the queues whenever the
30 ** queues are filled up to more than a certain threshold.
31 ** - some updates for EISA version of card
32 **
33 **
34 ** This code is free software; you can redistribute it and/or modify
35 ** it under the terms of the GNU General Public License as published by
36 ** the Free Software Foundation; either version 2 of the License, or
37 ** (at your option) any later version.
38 **
39 ** This code is distributed in the hope that it will be useful,
40 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
41 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 ** GNU General Public License for more details.
43 **
44 ** You should have received a copy of the GNU General Public License
45 ** along with this program; if not, write to the Free Software
46 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
47 **
48 ** 1.57c -> 1.58
49 ** - used indent to change coding-style
50 ** - added KTI DP-200 EISA ID
51 ** - ioremap is also used for low (<1MB) memory (multi-architecture support)
52 **
53 ** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
54 ** - release resources on failure in init_module
55 **
56 ** 1.57 -> 1.57b - Jean II
57 ** - fix spinlocks, SMP is now working !
58 **
59 ** 1.56 -> 1.57
60 ** - updates for new PCI interface for 2.1 kernels
61 **
62 ** 1.55 -> 1.56
63 ** - removed printk in misc. interrupt and update statistics to allow
64 ** monitoring of card status
65 ** - timing changes in xmit routines, relogin to 100VG hub added when
66 ** driver does reset
67 ** - included fix for Compex FreedomLine PCI adapter
68 **
69 ** 1.54 -> 1.55
70 ** - fixed bad initialization in init_module
71 ** - added Compex FreedomLine adapter
72 ** - some fixes in card initialization
73 **
74 ** 1.53 -> 1.54
75 ** - added hardware multicast filter support (doesn't work)
76 ** - little changes in hp100_sense_lan routine
77 ** - added support for Coax and AUI (J2970)
78 ** - fix for multiple cards and hp100_mode parameter (insmod)
79 ** - fix for shared IRQ
80 **
81 ** 1.52 -> 1.53
82 ** - fixed bug in multicast support
83 **
84 */
85
86 #define HP100_DEFAULT_PRIORITY_TX 0
87
88 #undef HP100_DEBUG
89 #undef HP100_DEBUG_B /* Trace */
90 #undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
91
92 #undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
93 #undef HP100_DEBUG_TX
94 #undef HP100_DEBUG_IRQ
95 #undef HP100_DEBUG_RX
96
97 #undef HP100_MULTICAST_FILTER /* Need to be debugged... */
98
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/string.h>
102 #include <linux/errno.h>
103 #include <linux/ioport.h>
104 #include <linux/slab.h>
105 #include <linux/interrupt.h>
106 #include <linux/eisa.h>
107 #include <linux/pci.h>
108 #include <linux/dma-mapping.h>
109 #include <linux/spinlock.h>
110 #include <linux/netdevice.h>
111 #include <linux/etherdevice.h>
112 #include <linux/skbuff.h>
113 #include <linux/types.h>
114 #include <linux/delay.h>
115 #include <linux/init.h>
116 #include <linux/bitops.h>
117 #include <linux/jiffies.h>
118
119 #include <asm/io.h>
120
121 #include "hp100.h"
122
123 /*
124 * defines
125 */
126
127 #define HP100_BUS_ISA 0
128 #define HP100_BUS_EISA 1
129 #define HP100_BUS_PCI 2
130
131 #define HP100_REGION_SIZE 0x20 /* for ioports */
132 #define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
133
134 #define HP100_MAX_PACKET_SIZE (1536+4)
135 #define HP100_MIN_PACKET_SIZE 60
136
137 #ifndef HP100_DEFAULT_RX_RATIO
138 /* default - 75% onboard memory on the card are used for RX packets */
139 #define HP100_DEFAULT_RX_RATIO 75
140 #endif
141
142 #ifndef HP100_DEFAULT_PRIORITY_TX
143 /* default - don't enable transmit outgoing packets as priority */
144 #define HP100_DEFAULT_PRIORITY_TX 0
145 #endif
146
147 /*
148 * structures
149 */
150
151 struct hp100_private {
152 spinlock_t lock;
153 char id[HP100_SIG_LEN];
154 u_short chip;
155 u_short soft_model;
156 u_int memory_size;
157 u_int virt_memory_size;
158 u_short rx_ratio; /* 1 - 99 */
159 u_short priority_tx; /* != 0 - priority tx */
160 u_short mode; /* PIO, Shared Mem or Busmaster */
161 u_char bus;
162 struct pci_dev *pci_dev;
163 short mem_mapped; /* memory mapped access */
164 void __iomem *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
165 unsigned long mem_ptr_phys; /* physical memory mapped area */
166 short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
167 int hub_status; /* was login to hub successful? */
168 u_char mac1_mode;
169 u_char mac2_mode;
170 u_char hash_bytes[8];
171 struct net_device_stats stats;
172
173 /* Rings for busmaster mode: */
174 hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
175 hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
176 hp100_ring_t *txrhead; /* Head (oldest) index into txring */
177 hp100_ring_t *txrtail; /* Tail (newest) index into txring */
178
179 hp100_ring_t rxring[MAX_RX_PDL];
180 hp100_ring_t txring[MAX_TX_PDL];
181
182 u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
183 u_long whatever_offset; /* Offset to bus/phys/dma address */
184 int rxrcommit; /* # Rx PDLs commited to adapter */
185 int txrcommit; /* # Tx PDLs commited to adapter */
186 };
187
188 /*
189 * variables
190 */
191 #ifdef CONFIG_ISA
192 static const char *hp100_isa_tbl[] = {
193 "HWPF150", /* HP J2573 rev A */
194 "HWP1950", /* HP J2573 */
195 };
196 #endif
197
198 #ifdef CONFIG_EISA
199 static struct eisa_device_id hp100_eisa_tbl[] = {
200 { "HWPF180" }, /* HP J2577 rev A */
201 { "HWP1920" }, /* HP 27248B */
202 { "HWP1940" }, /* HP J2577 */
203 { "HWP1990" }, /* HP J2577 */
204 { "CPX0301" }, /* ReadyLink ENET100-VG4 */
205 { "CPX0401" }, /* FreedomLine 100/VG */
206 { "" } /* Mandatory final entry ! */
207 };
208 MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
209 #endif
210
211 #ifdef CONFIG_PCI
212 static struct pci_device_id hp100_pci_tbl[] = {
213 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
214 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
215 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
216 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
217 {PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
218 {PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
219 /* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
220 {} /* Terminating entry */
221 };
222 MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
223 #endif
224
225 static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
226 static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
227 static int hp100_mode = 1;
228
229 module_param(hp100_rx_ratio, int, 0);
230 module_param(hp100_priority_tx, int, 0);
231 module_param(hp100_mode, int, 0);
232
233 /*
234 * prototypes
235 */
236
237 static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
238 struct pci_dev *pci_dev);
239
240
241 static int hp100_open(struct net_device *dev);
242 static int hp100_close(struct net_device *dev);
243 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
244 static int hp100_start_xmit_bm(struct sk_buff *skb,
245 struct net_device *dev);
246 static void hp100_rx(struct net_device *dev);
247 static struct net_device_stats *hp100_get_stats(struct net_device *dev);
248 static void hp100_misc_interrupt(struct net_device *dev);
249 static void hp100_update_stats(struct net_device *dev);
250 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
251 static void hp100_set_multicast_list(struct net_device *dev);
252 static irqreturn_t hp100_interrupt(int irq, void *dev_id);
253 static void hp100_start_interface(struct net_device *dev);
254 static void hp100_stop_interface(struct net_device *dev);
255 static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
256 static int hp100_sense_lan(struct net_device *dev);
257 static int hp100_login_to_vg_hub(struct net_device *dev,
258 u_short force_relogin);
259 static int hp100_down_vg_link(struct net_device *dev);
260 static void hp100_cascade_reset(struct net_device *dev, u_short enable);
261 static void hp100_BM_shutdown(struct net_device *dev);
262 static void hp100_mmuinit(struct net_device *dev);
263 static void hp100_init_pdls(struct net_device *dev);
264 static int hp100_init_rxpdl(struct net_device *dev,
265 register hp100_ring_t * ringptr,
266 register u_int * pdlptr);
267 static int hp100_init_txpdl(struct net_device *dev,
268 register hp100_ring_t * ringptr,
269 register u_int * pdlptr);
270 static void hp100_rxfill(struct net_device *dev);
271 static void hp100_hwinit(struct net_device *dev);
272 static void hp100_clean_txring(struct net_device *dev);
273 #ifdef HP100_DEBUG
274 static void hp100_RegisterDump(struct net_device *dev);
275 #endif
276
277 /* Conversion to new PCI API :
278 * Convert an address in a kernel buffer to a bus/phys/dma address.
279 * This work *only* for memory fragments part of lp->page_vaddr,
280 * because it was properly DMA allocated via pci_alloc_consistent(),
281 * so we just need to "retrieve" the original mapping to bus/phys/dma
282 * address - Jean II */
283 static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
284 {
285 struct hp100_private *lp = netdev_priv(dev);
286 return ((u_long) ptr) + lp->whatever_offset;
287 }
288
289 static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
290 {
291 return pci_map_single(lp->pci_dev, data,
292 MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
293 }
294
295 /* TODO: This function should not really be needed in a good design... */
296 static void wait(void)
297 {
298 mdelay(1);
299 }
300
301 /*
302 * probe functions
303 * These functions should - if possible - avoid doing write operations
304 * since this could cause problems when the card is not installed.
305 */
306
307 /*
308 * Read board id and convert to string.
309 * Effectively same code as decode_eisa_sig
310 */
311 static __devinit const char *hp100_read_id(int ioaddr)
312 {
313 int i;
314 static char str[HP100_SIG_LEN];
315 unsigned char sig[4], sum;
316 unsigned short rev;
317
318 hp100_page(ID_MAC_ADDR);
319 sum = 0;
320 for (i = 0; i < 4; i++) {
321 sig[i] = hp100_inb(BOARD_ID + i);
322 sum += sig[i];
323 }
324
325 sum += hp100_inb(BOARD_ID + i);
326 if (sum != 0xff)
327 return NULL; /* bad checksum */
328
329 str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
330 str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
331 str[2] = (sig[1] & 0x1f) + ('A' - 1);
332 rev = (sig[2] << 8) | sig[3];
333 sprintf(str + 3, "%04X", rev);
334
335 return str;
336 }
337
338 #ifdef CONFIG_ISA
339 static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
340 {
341 const char *sig;
342 int i;
343
344 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
345 goto err;
346
347 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
348 release_region(ioaddr, HP100_REGION_SIZE);
349 goto err;
350 }
351
352 sig = hp100_read_id(ioaddr);
353 release_region(ioaddr, HP100_REGION_SIZE);
354
355 if (sig == NULL)
356 goto err;
357
358 for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
359 if (!strcmp(hp100_isa_tbl[i], sig))
360 break;
361
362 }
363
364 if (i < ARRAY_SIZE(hp100_isa_tbl))
365 return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
366 err:
367 return -ENODEV;
368
369 }
370 /*
371 * Probe for ISA board.
372 * EISA and PCI are handled by device infrastructure.
373 */
374
375 static int __init hp100_isa_probe(struct net_device *dev, int addr)
376 {
377 int err = -ENODEV;
378
379 /* Probe for a specific ISA address */
380 if (addr > 0xff && addr < 0x400)
381 err = hp100_isa_probe1(dev, addr);
382
383 else if (addr != 0)
384 err = -ENXIO;
385
386 else {
387 /* Probe all ISA possible port regions */
388 for (addr = 0x100; addr < 0x400; addr += 0x20) {
389 err = hp100_isa_probe1(dev, addr);
390 if (!err)
391 break;
392 }
393 }
394 return err;
395 }
396 #endif /* CONFIG_ISA */
397
398 #if !defined(MODULE) && defined(CONFIG_ISA)
399 struct net_device * __init hp100_probe(int unit)
400 {
401 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
402 int err;
403
404 if (!dev)
405 return ERR_PTR(-ENODEV);
406
407 SET_MODULE_OWNER(dev);
408
409 #ifdef HP100_DEBUG_B
410 hp100_outw(0x4200, TRACE);
411 printk("hp100: %s: probe\n", dev->name);
412 #endif
413
414 if (unit >= 0) {
415 sprintf(dev->name, "eth%d", unit);
416 netdev_boot_setup_check(dev);
417 }
418
419 err = hp100_isa_probe(dev, dev->base_addr);
420 if (err)
421 goto out;
422
423 return dev;
424 out:
425 free_netdev(dev);
426 return ERR_PTR(err);
427 }
428 #endif /* !MODULE && CONFIG_ISA */
429
430 static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
431 u_char bus, struct pci_dev *pci_dev)
432 {
433 int i;
434 int err = -ENODEV;
435 const char *eid;
436 u_int chip;
437 u_char uc;
438 u_int memory_size = 0, virt_memory_size = 0;
439 u_short local_mode, lsw;
440 short mem_mapped;
441 unsigned long mem_ptr_phys;
442 void __iomem *mem_ptr_virt;
443 struct hp100_private *lp;
444
445 #ifdef HP100_DEBUG_B
446 hp100_outw(0x4201, TRACE);
447 printk("hp100: %s: probe1\n", dev->name);
448 #endif
449
450 /* memory region for programmed i/o */
451 if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
452 goto out1;
453
454 if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
455 goto out2;
456
457 chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
458 #ifdef HP100_DEBUG
459 if (chip == HP100_CHIPID_SHASTA)
460 printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
461 else if (chip == HP100_CHIPID_RAINIER)
462 printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
463 else if (chip == HP100_CHIPID_LASSEN)
464 printk("hp100: %s: Lassen Chip detected.\n", dev->name);
465 else
466 printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
467 #endif
468
469 dev->base_addr = ioaddr;
470
471 eid = hp100_read_id(ioaddr);
472 if (eid == NULL) { /* bad checksum? */
473 printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
474 goto out2;
475 }
476
477 hp100_page(ID_MAC_ADDR);
478 for (i = uc = 0; i < 7; i++)
479 uc += hp100_inb(LAN_ADDR + i);
480 if (uc != 0xff) {
481 printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
482 err = -EIO;
483 goto out2;
484 }
485
486 /* Make sure, that all registers are correctly updated... */
487
488 hp100_load_eeprom(dev, ioaddr);
489 wait();
490
491 /*
492 * Determine driver operation mode
493 *
494 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
495 * force driver modes:
496 * hp100_mode=1 -> default, use busmaster mode if configured.
497 * hp100_mode=2 -> enable shared memory mode
498 * hp100_mode=3 -> force use of i/o mapped mode.
499 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
500 */
501
502 /*
503 * LSW values:
504 * 0x2278 -> J2585B, PnP shared memory mode
505 * 0x2270 -> J2585B, shared memory mode, 0xdc000
506 * 0xa23c -> J2585B, I/O mapped mode
507 * 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
508 * 0x2220 -> EISA HP, I/O (Shasta Chip)
509 * 0x2260 -> EISA HP, BusMaster (Shasta Chip)
510 */
511
512 #if 0
513 local_mode = 0x2270;
514 hp100_outw(0xfefe, OPTION_LSW);
515 hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
516 #endif
517
518 /* hp100_mode value maybe used in future by another card */
519 local_mode = hp100_mode;
520 if (local_mode < 1 || local_mode > 4)
521 local_mode = 1; /* default */
522 #ifdef HP100_DEBUG
523 printk("hp100: %s: original LSW = 0x%x\n", dev->name,
524 hp100_inw(OPTION_LSW));
525 #endif
526
527 if (local_mode == 3) {
528 hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
529 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
530 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
531 printk("hp100: IO mapped mode forced.\n");
532 } else if (local_mode == 2) {
533 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
534 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
535 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
536 printk("hp100: Shared memory mode requested.\n");
537 } else if (local_mode == 4) {
538 if (chip == HP100_CHIPID_LASSEN) {
539 hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
540 hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
541 printk("hp100: Busmaster mode requested.\n");
542 }
543 local_mode = 1;
544 }
545
546 if (local_mode == 1) { /* default behaviour */
547 lsw = hp100_inw(OPTION_LSW);
548
549 if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
550 (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
551 #ifdef HP100_DEBUG
552 printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
553 #endif
554 local_mode = 3;
555 } else if (chip == HP100_CHIPID_LASSEN &&
556 (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
557 /* Conversion to new PCI API :
558 * I don't have the doc, but I assume that the card
559 * can map the full 32bit address space.
560 * Also, we can have EISA Busmaster cards (not tested),
561 * so beware !!! - Jean II */
562 if((bus == HP100_BUS_PCI) &&
563 (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK))) {
564 /* Gracefully fallback to shared memory */
565 goto busmasterfail;
566 }
567 printk("hp100: Busmaster mode enabled.\n");
568 hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
569 } else {
570 busmasterfail:
571 #ifdef HP100_DEBUG
572 printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
573 printk("hp100: %s: Trying shared memory mode.\n", dev->name);
574 #endif
575 /* In this case, try shared memory mode */
576 local_mode = 2;
577 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
578 /* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
579 }
580 }
581 #ifdef HP100_DEBUG
582 printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
583 #endif
584
585 /* Check for shared memory on the card, eventually remap it */
586 hp100_page(HW_MAP);
587 mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
588 mem_ptr_phys = 0UL;
589 mem_ptr_virt = NULL;
590 memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
591 virt_memory_size = 0;
592
593 /* For memory mapped or busmaster mode, we want the memory address */
594 if (mem_mapped || (local_mode == 1)) {
595 mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
596 mem_ptr_phys &= ~0x1fff; /* 8k alignment */
597
598 if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
599 printk("hp100: Can only use programmed i/o mode.\n");
600 mem_ptr_phys = 0;
601 mem_mapped = 0;
602 local_mode = 3; /* Use programmed i/o */
603 }
604
605 /* We do not need access to shared memory in busmaster mode */
606 /* However in slave mode we need to remap high (>1GB) card memory */
607 if (local_mode != 1) { /* = not busmaster */
608 /* We try with smaller memory sizes, if ioremap fails */
609 for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
610 if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
611 #ifdef HP100_DEBUG
612 printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
613 #endif
614 } else {
615 #ifdef HP100_DEBUG
616 printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
617 #endif
618 break;
619 }
620 }
621
622 if (mem_ptr_virt == NULL) { /* all ioremap tries failed */
623 printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
624 local_mode = 3;
625 virt_memory_size = 0;
626 }
627 }
628 }
629
630 if (local_mode == 3) { /* io mapped forced */
631 mem_mapped = 0;
632 mem_ptr_phys = 0;
633 mem_ptr_virt = NULL;
634 printk("hp100: Using (slow) programmed i/o mode.\n");
635 }
636
637 /* Initialise the "private" data structure for this card. */
638 lp = netdev_priv(dev);
639
640 spin_lock_init(&lp->lock);
641 strlcpy(lp->id, eid, HP100_SIG_LEN);
642 lp->chip = chip;
643 lp->mode = local_mode;
644 lp->bus = bus;
645 lp->pci_dev = pci_dev;
646 lp->priority_tx = hp100_priority_tx;
647 lp->rx_ratio = hp100_rx_ratio;
648 lp->mem_ptr_phys = mem_ptr_phys;
649 lp->mem_ptr_virt = mem_ptr_virt;
650 hp100_page(ID_MAC_ADDR);
651 lp->soft_model = hp100_inb(SOFT_MODEL);
652 lp->mac1_mode = HP100_MAC1MODE3;
653 lp->mac2_mode = HP100_MAC2MODE3;
654 memset(&lp->hash_bytes, 0x00, 8);
655
656 dev->base_addr = ioaddr;
657
658 lp->memory_size = memory_size;
659 lp->virt_memory_size = virt_memory_size;
660 lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
661
662 dev->open = hp100_open;
663 dev->stop = hp100_close;
664
665 if (lp->mode == 1) /* busmaster */
666 dev->hard_start_xmit = hp100_start_xmit_bm;
667 else
668 dev->hard_start_xmit = hp100_start_xmit;
669
670 dev->get_stats = hp100_get_stats;
671 dev->set_multicast_list = &hp100_set_multicast_list;
672
673 /* Ask the card for which IRQ line it is configured */
674 if (bus == HP100_BUS_PCI) {
675 dev->irq = pci_dev->irq;
676 } else {
677 hp100_page(HW_MAP);
678 dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
679 if (dev->irq == 2)
680 dev->irq = 9;
681 }
682
683 if (lp->mode == 1) /* busmaster */
684 dev->dma = 4;
685
686 /* Ask the card for its MAC address and store it for later use. */
687 hp100_page(ID_MAC_ADDR);
688 for (i = uc = 0; i < 6; i++)
689 dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
690
691 /* Reset statistics (counters) */
692 hp100_clear_stats(lp, ioaddr);
693
694 /* If busmaster mode is wanted, a dma-capable memory area is needed for
695 * the rx and tx PDLs
696 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
697 * needed for the allocation of the memory area.
698 */
699
700 /* TODO: We do not need this with old cards, where PDLs are stored
701 * in the cards shared memory area. But currently, busmaster has been
702 * implemented/tested only with the lassen chip anyway... */
703 if (lp->mode == 1) { /* busmaster */
704 dma_addr_t page_baddr;
705 /* Get physically continous memory for TX & RX PDLs */
706 /* Conversion to new PCI API :
707 * Pages are always aligned and zeroed, no need to it ourself.
708 * Doc says should be OK for EISA bus as well - Jean II */
709 if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
710 err = -ENOMEM;
711 goto out2;
712 }
713 lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
714
715 #ifdef HP100_DEBUG_BM
716 printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
717 #endif
718 lp->rxrcommit = lp->txrcommit = 0;
719 lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
720 lp->txrhead = lp->txrtail = &(lp->txring[0]);
721 }
722
723 /* Initialise the card. */
724 /* (I'm not really sure if it's a good idea to do this during probing, but
725 * like this it's assured that the lan connection type can be sensed
726 * correctly)
727 */
728 hp100_hwinit(dev);
729
730 /* Try to find out which kind of LAN the card is connected to. */
731 lp->lan_type = hp100_sense_lan(dev);
732
733 /* Print out a message what about what we think we have probed. */
734 printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
735 switch (bus) {
736 case HP100_BUS_EISA:
737 printk("EISA");
738 break;
739 case HP100_BUS_PCI:
740 printk("PCI");
741 break;
742 default:
743 printk("ISA");
744 break;
745 }
746 printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
747
748 if (lp->mode == 2) { /* memory mapped */
749 printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
750 (mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
751 if (mem_ptr_virt)
752 printk(" (virtual base %p)", mem_ptr_virt);
753 printk(".\n");
754
755 /* Set for info when doing ifconfig */
756 dev->mem_start = mem_ptr_phys;
757 dev->mem_end = mem_ptr_phys + lp->memory_size;
758 }
759
760 printk("hp100: ");
761 if (lp->lan_type != HP100_LAN_ERR)
762 printk("Adapter is attached to ");
763 switch (lp->lan_type) {
764 case HP100_LAN_100:
765 printk("100Mb/s Voice Grade AnyLAN network.\n");
766 break;
767 case HP100_LAN_10:
768 printk("10Mb/s network (10baseT).\n");
769 break;
770 case HP100_LAN_COAX:
771 printk("10Mb/s network (coax).\n");
772 break;
773 default:
774 printk("Warning! Link down.\n");
775 }
776
777 err = register_netdev(dev);
778 if (err)
779 goto out3;
780
781 return 0;
782 out3:
783 if (local_mode == 1)
784 pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
785 lp->page_vaddr_algn,
786 virt_to_whatever(dev, lp->page_vaddr_algn));
787 if (mem_ptr_virt)
788 iounmap(mem_ptr_virt);
789 out2:
790 release_region(ioaddr, HP100_REGION_SIZE);
791 out1:
792 return err;
793 }
794
795 /* This procedure puts the card into a stable init state */
796 static void hp100_hwinit(struct net_device *dev)
797 {
798 int ioaddr = dev->base_addr;
799 struct hp100_private *lp = netdev_priv(dev);
800
801 #ifdef HP100_DEBUG_B
802 hp100_outw(0x4202, TRACE);
803 printk("hp100: %s: hwinit\n", dev->name);
804 #endif
805
806 /* Initialise the card. -------------------------------------------- */
807
808 /* Clear all pending Ints and disable Ints */
809 hp100_page(PERFORMANCE);
810 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
811 hp100_outw(0xffff, IRQ_STATUS); /* clear all pending ints */
812
813 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
814 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
815
816 if (lp->mode == 1) {
817 hp100_BM_shutdown(dev); /* disables BM, puts cascade in reset */
818 wait();
819 } else {
820 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
821 hp100_cascade_reset(dev, 1);
822 hp100_page(MAC_CTRL);
823 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
824 }
825
826 /* Initiate EEPROM reload */
827 hp100_load_eeprom(dev, 0);
828
829 wait();
830
831 /* Go into reset again. */
832 hp100_cascade_reset(dev, 1);
833
834 /* Set Option Registers to a safe state */
835 hp100_outw(HP100_DEBUG_EN |
836 HP100_RX_HDR |
837 HP100_EE_EN |
838 HP100_BM_WRITE |
839 HP100_BM_READ | HP100_RESET_HB |
840 HP100_FAKE_INT |
841 HP100_INT_EN |
842 HP100_MEM_EN |
843 HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
844
845 hp100_outw(HP100_TRI_INT |
846 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
847
848 hp100_outb(HP100_PRIORITY_TX |
849 HP100_ADV_NXT_PKT |
850 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
851
852 /* TODO: Configure MMU for Ram Test. */
853 /* TODO: Ram Test. */
854
855 /* Re-check if adapter is still at same i/o location */
856 /* (If the base i/o in eeprom has been changed but the */
857 /* registers had not been changed, a reload of the eeprom */
858 /* would move the adapter to the address stored in eeprom */
859
860 /* TODO: Code to implement. */
861
862 /* Until here it was code from HWdiscover procedure. */
863 /* Next comes code from mmuinit procedure of SCO BM driver which is
864 * called from HWconfigure in the SCO driver. */
865
866 /* Initialise MMU, eventually switch on Busmaster Mode, initialise
867 * multicast filter...
868 */
869 hp100_mmuinit(dev);
870
871 /* We don't turn the interrupts on here - this is done by start_interface. */
872 wait(); /* TODO: Do we really need this? */
873
874 /* Enable Hardware (e.g. unreset) */
875 hp100_cascade_reset(dev, 0);
876
877 /* ------- initialisation complete ----------- */
878
879 /* Finally try to log in the Hub if there may be a VG connection. */
880 if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
881 hp100_login_to_vg_hub(dev, 0); /* relogin */
882
883 }
884
885
886 /*
887 * mmuinit - Reinitialise Cascade MMU and MAC settings.
888 * Note: Must already be in reset and leaves card in reset.
889 */
890 static void hp100_mmuinit(struct net_device *dev)
891 {
892 int ioaddr = dev->base_addr;
893 struct hp100_private *lp = netdev_priv(dev);
894 int i;
895
896 #ifdef HP100_DEBUG_B
897 hp100_outw(0x4203, TRACE);
898 printk("hp100: %s: mmuinit\n", dev->name);
899 #endif
900
901 #ifdef HP100_DEBUG
902 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
903 printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
904 return;
905 }
906 #endif
907
908 /* Make sure IRQs are masked off and ack'ed. */
909 hp100_page(PERFORMANCE);
910 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
911 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
912
913 /*
914 * Enable Hardware
915 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
916 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
917 * - Clear Priority, Advance Pkt and Xmit Cmd
918 */
919
920 hp100_outw(HP100_DEBUG_EN |
921 HP100_RX_HDR |
922 HP100_EE_EN | HP100_RESET_HB |
923 HP100_IO_EN |
924 HP100_FAKE_INT |
925 HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
926
927 hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
928
929 if (lp->mode == 1) { /* busmaster */
930 hp100_outw(HP100_BM_WRITE |
931 HP100_BM_READ |
932 HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
933 } else if (lp->mode == 2) { /* memory mapped */
934 hp100_outw(HP100_BM_WRITE |
935 HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
936 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
937 hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
938 hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
939 } else if (lp->mode == 3) { /* i/o mapped mode */
940 hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
941 HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
942 }
943
944 hp100_page(HW_MAP);
945 hp100_outb(0, EARLYRXCFG);
946 hp100_outw(0, EARLYTXCFG);
947
948 /*
949 * Enable Bus Master mode
950 */
951 if (lp->mode == 1) { /* busmaster */
952 /* Experimental: Set some PCI configuration bits */
953 hp100_page(HW_MAP);
954 hp100_andb(~HP100_PDL_USE3, MODECTRL1); /* BM engine read maximum */
955 hp100_andb(~HP100_TX_DUALQ, MODECTRL1); /* No Queue for Priority TX */
956
957 /* PCI Bus failures should result in a Misc. Interrupt */
958 hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
959
960 hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
961 hp100_page(HW_MAP);
962 /* Use Burst Mode and switch on PAGE_CK */
963 hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
964 if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
965 hp100_orb(HP100_BM_PAGE_CK, BM);
966 hp100_orb(HP100_BM_MASTER, BM);
967 } else { /* not busmaster */
968
969 hp100_page(HW_MAP);
970 hp100_andb(~HP100_BM_MASTER, BM);
971 }
972
973 /*
974 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
975 */
976 hp100_page(MMU_CFG);
977 if (lp->mode == 1) { /* only needed for Busmaster */
978 int xmit_stop, recv_stop;
979
980 if ((lp->chip == HP100_CHIPID_RAINIER)
981 || (lp->chip == HP100_CHIPID_SHASTA)) {
982 int pdl_stop;
983
984 /*
985 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
986 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
987 * to the next higher 1k boundary) bytes for the rx-pdl's
988 * Note: For non-etr chips the transmit stop register must be
989 * programmed on a 1k boundary, i.e. bits 9:0 must be zero.
990 */
991 pdl_stop = lp->memory_size;
992 xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
993 recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
994 hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
995 #ifdef HP100_DEBUG_BM
996 printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
997 #endif
998 } else {
999 /* ETR chip (Lassen) in busmaster mode */
1000 xmit_stop = (lp->memory_size) - 1;
1001 recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
1002 }
1003
1004 hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
1005 hp100_outw(recv_stop >> 4, RX_MEM_STOP);
1006 #ifdef HP100_DEBUG_BM
1007 printk("hp100: %s: TX_STOP = 0x%x\n", dev->name, xmit_stop >> 4);
1008 printk("hp100: %s: RX_STOP = 0x%x\n", dev->name, recv_stop >> 4);
1009 #endif
1010 } else {
1011 /* Slave modes (memory mapped and programmed io) */
1012 hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
1013 hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
1014 #ifdef HP100_DEBUG
1015 printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
1016 printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
1017 #endif
1018 }
1019
1020 /* Write MAC address into page 1 */
1021 hp100_page(MAC_ADDRESS);
1022 for (i = 0; i < 6; i++)
1023 hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
1024
1025 /* Zero the multicast hash registers */
1026 for (i = 0; i < 8; i++)
1027 hp100_outb(0x0, HASH_BYTE0 + i);
1028
1029 /* Set up MAC defaults */
1030 hp100_page(MAC_CTRL);
1031
1032 /* Go to LAN Page and zero all filter bits */
1033 /* Zero accept error, accept multicast, accept broadcast and accept */
1034 /* all directed packet bits */
1035 hp100_andb(~(HP100_RX_EN |
1036 HP100_TX_EN |
1037 HP100_ACC_ERRORED |
1038 HP100_ACC_MC |
1039 HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
1040
1041 hp100_outb(0x00, MAC_CFG_2);
1042
1043 /* Zero the frame format bit. This works around a training bug in the */
1044 /* new hubs. */
1045 hp100_outb(0x00, VG_LAN_CFG_2); /* (use 802.3) */
1046
1047 if (lp->priority_tx)
1048 hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
1049 else
1050 hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
1051
1052 hp100_outb(HP100_ADV_NXT_PKT |
1053 HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
1054
1055 /* If busmaster, initialize the PDLs */
1056 if (lp->mode == 1)
1057 hp100_init_pdls(dev);
1058
1059 /* Go to performance page and initalize isr and imr registers */
1060 hp100_page(PERFORMANCE);
1061 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1062 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
1063 }
1064
1065 /*
1066 * open/close functions
1067 */
1068
1069 static int hp100_open(struct net_device *dev)
1070 {
1071 struct hp100_private *lp = netdev_priv(dev);
1072 #ifdef HP100_DEBUG_B
1073 int ioaddr = dev->base_addr;
1074 #endif
1075
1076 #ifdef HP100_DEBUG_B
1077 hp100_outw(0x4204, TRACE);
1078 printk("hp100: %s: open\n", dev->name);
1079 #endif
1080
1081 /* New: if bus is PCI or EISA, interrupts might be shared interrupts */
1082 if (request_irq(dev->irq, hp100_interrupt,
1083 lp->bus == HP100_BUS_PCI || lp->bus ==
1084 HP100_BUS_EISA ? IRQF_SHARED : IRQF_DISABLED,
1085 "hp100", dev)) {
1086 printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
1087 return -EAGAIN;
1088 }
1089
1090 dev->trans_start = jiffies;
1091 netif_start_queue(dev);
1092
1093 lp->lan_type = hp100_sense_lan(dev);
1094 lp->mac1_mode = HP100_MAC1MODE3;
1095 lp->mac2_mode = HP100_MAC2MODE3;
1096 memset(&lp->hash_bytes, 0x00, 8);
1097
1098 hp100_stop_interface(dev);
1099
1100 hp100_hwinit(dev);
1101
1102 hp100_start_interface(dev); /* sets mac modes, enables interrupts */
1103
1104 return 0;
1105 }
1106
1107 /* The close function is called when the interface is to be brought down */
1108 static int hp100_close(struct net_device *dev)
1109 {
1110 int ioaddr = dev->base_addr;
1111 struct hp100_private *lp = netdev_priv(dev);
1112
1113 #ifdef HP100_DEBUG_B
1114 hp100_outw(0x4205, TRACE);
1115 printk("hp100: %s: close\n", dev->name);
1116 #endif
1117
1118 hp100_page(PERFORMANCE);
1119 hp100_outw(0xfefe, IRQ_MASK); /* mask off all IRQs */
1120
1121 hp100_stop_interface(dev);
1122
1123 if (lp->lan_type == HP100_LAN_100)
1124 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1125
1126 netif_stop_queue(dev);
1127
1128 free_irq(dev->irq, dev);
1129
1130 #ifdef HP100_DEBUG
1131 printk("hp100: %s: close LSW = 0x%x\n", dev->name,
1132 hp100_inw(OPTION_LSW));
1133 #endif
1134
1135 return 0;
1136 }
1137
1138
1139 /*
1140 * Configure the PDL Rx rings and LAN
1141 */
1142 static void hp100_init_pdls(struct net_device *dev)
1143 {
1144 struct hp100_private *lp = netdev_priv(dev);
1145 hp100_ring_t *ringptr;
1146 u_int *pageptr; /* Warning : increment by 4 - Jean II */
1147 int i;
1148
1149 #ifdef HP100_DEBUG_B
1150 int ioaddr = dev->base_addr;
1151 #endif
1152
1153 #ifdef HP100_DEBUG_B
1154 hp100_outw(0x4206, TRACE);
1155 printk("hp100: %s: init pdls\n", dev->name);
1156 #endif
1157
1158 if (0 == lp->page_vaddr_algn)
1159 printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n", dev->name);
1160 else {
1161 /* pageptr shall point into the DMA accessible memory region */
1162 /* we use this pointer to status the upper limit of allocated */
1163 /* memory in the allocated page. */
1164 /* note: align the pointers to the pci cache line size */
1165 memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
1166 pageptr = lp->page_vaddr_algn;
1167
1168 lp->rxrcommit = 0;
1169 ringptr = lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
1170
1171 /* Initialise Rx Ring */
1172 for (i = MAX_RX_PDL - 1; i >= 0; i--) {
1173 lp->rxring[i].next = ringptr;
1174 ringptr = &(lp->rxring[i]);
1175 pageptr += hp100_init_rxpdl(dev, ringptr, pageptr);
1176 }
1177
1178 /* Initialise Tx Ring */
1179 lp->txrcommit = 0;
1180 ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
1181 for (i = MAX_TX_PDL - 1; i >= 0; i--) {
1182 lp->txring[i].next = ringptr;
1183 ringptr = &(lp->txring[i]);
1184 pageptr += hp100_init_txpdl(dev, ringptr, pageptr);
1185 }
1186 }
1187 }
1188
1189
1190 /* These functions "format" the entries in the pdl structure */
1191 /* They return how much memory the fragments need. */
1192 static int hp100_init_rxpdl(struct net_device *dev,
1193 register hp100_ring_t * ringptr,
1194 register u32 * pdlptr)
1195 {
1196 /* pdlptr is starting address for this pdl */
1197
1198 if (0 != (((unsigned long) pdlptr) & 0xf))
1199 printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
1200 dev->name, (unsigned long) pdlptr);
1201
1202 ringptr->pdl = pdlptr + 1;
1203 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr + 1);
1204 ringptr->skb = (void *) NULL;
1205
1206 /*
1207 * Write address and length of first PDL Fragment (which is used for
1208 * storing the RX-Header
1209 * We use the 4 bytes _before_ the PDH in the pdl memory area to
1210 * store this information. (PDH is at offset 0x04)
1211 */
1212 /* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
1213
1214 *(pdlptr + 2) = (u_int) virt_to_whatever(dev, pdlptr); /* Address Frag 1 */
1215 *(pdlptr + 3) = 4; /* Length Frag 1 */
1216
1217 return ((((MAX_RX_FRAG * 2 + 2) + 3) / 4) * 4);
1218 }
1219
1220
1221 static int hp100_init_txpdl(struct net_device *dev,
1222 register hp100_ring_t * ringptr,
1223 register u32 * pdlptr)
1224 {
1225 if (0 != (((unsigned long) pdlptr) & 0xf))
1226 printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
1227
1228 ringptr->pdl = pdlptr; /* +1; */
1229 ringptr->pdl_paddr = virt_to_whatever(dev, pdlptr); /* +1 */
1230 ringptr->skb = (void *) NULL;
1231
1232 return ((((MAX_TX_FRAG * 2 + 2) + 3) / 4) * 4);
1233 }
1234
1235 /*
1236 * hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
1237 * for possible odd word alignment rounding up to next dword and set PDL
1238 * address for fragment#2
1239 * Returns: 0 if unable to allocate skb_buff
1240 * 1 if successful
1241 */
1242 static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
1243 struct net_device *dev)
1244 {
1245 #ifdef HP100_DEBUG_B
1246 int ioaddr = dev->base_addr;
1247 #endif
1248 #ifdef HP100_DEBUG_BM
1249 u_int *p;
1250 #endif
1251
1252 #ifdef HP100_DEBUG_B
1253 hp100_outw(0x4207, TRACE);
1254 printk("hp100: %s: build rx pdl\n", dev->name);
1255 #endif
1256
1257 /* Allocate skb buffer of maximum size */
1258 /* Note: This depends on the alloc_skb functions allocating more
1259 * space than requested, i.e. aligning to 16bytes */
1260
1261 ringptr->skb = dev_alloc_skb(((MAX_ETHER_SIZE + 2 + 3) / 4) * 4);
1262
1263 if (NULL != ringptr->skb) {
1264 /*
1265 * Reserve 2 bytes at the head of the buffer to land the IP header
1266 * on a long word boundary (According to the Network Driver section
1267 * in the Linux KHG, this should help to increase performance.)
1268 */
1269 skb_reserve(ringptr->skb, 2);
1270
1271 ringptr->skb->dev = dev;
1272 ringptr->skb->data = (u_char *) skb_put(ringptr->skb, MAX_ETHER_SIZE);
1273
1274 /* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
1275 /* Note: 1st Fragment is used for the 4 byte packet status
1276 * (receive header). Its PDL entries are set up by init_rxpdl. So
1277 * here we only have to set up the PDL fragment entries for the data
1278 * part. Those 4 bytes will be stored in the DMA memory region
1279 * directly before the PDL.
1280 */
1281 #ifdef HP100_DEBUG_BM
1282 printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
1283 dev->name, (u_int) ringptr->pdl,
1284 ((MAX_ETHER_SIZE + 2 + 3) / 4) * 4,
1285 (unsigned int) ringptr->skb->data);
1286 #endif
1287
1288 /* Conversion to new PCI API : map skbuf data to PCI bus.
1289 * Doc says it's OK for EISA as well - Jean II */
1290 ringptr->pdl[0] = 0x00020000; /* Write PDH */
1291 ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
1292 ringptr->skb->data);
1293 ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
1294
1295 #ifdef HP100_DEBUG_BM
1296 for (p = (ringptr->pdl); p < (ringptr->pdl + 5); p++)
1297 printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n", dev->name, (u_int) p, (u_int) * p);
1298 #endif
1299 return (1);
1300 }
1301 /* else: */
1302 /* alloc_skb failed (no memory) -> still can receive the header
1303 * fragment into PDL memory. make PDL safe by clearing msgptr and
1304 * making the PDL only 1 fragment (i.e. the 4 byte packet status)
1305 */
1306 #ifdef HP100_DEBUG_BM
1307 printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n", dev->name, (u_int) ringptr->pdl);
1308 #endif
1309
1310 ringptr->pdl[0] = 0x00010000; /* PDH: Count=1 Fragment */
1311
1312 return (0);
1313 }
1314
1315 /*
1316 * hp100_rxfill - attempt to fill the Rx Ring will empty skb's
1317 *
1318 * Makes assumption that skb's are always contiguous memory areas and
1319 * therefore PDLs contain only 2 physical fragments.
1320 * - While the number of Rx PDLs with buffers is less than maximum
1321 * a. Get a maximum packet size skb
1322 * b. Put the physical address of the buffer into the PDL.
1323 * c. Output physical address of PDL to adapter.
1324 */
1325 static void hp100_rxfill(struct net_device *dev)
1326 {
1327 int ioaddr = dev->base_addr;
1328
1329 struct hp100_private *lp = netdev_priv(dev);
1330 hp100_ring_t *ringptr;
1331
1332 #ifdef HP100_DEBUG_B
1333 hp100_outw(0x4208, TRACE);
1334 printk("hp100: %s: rxfill\n", dev->name);
1335 #endif
1336
1337 hp100_page(PERFORMANCE);
1338
1339 while (lp->rxrcommit < MAX_RX_PDL) {
1340 /*
1341 ** Attempt to get a buffer and build a Rx PDL.
1342 */
1343 ringptr = lp->rxrtail;
1344 if (0 == hp100_build_rx_pdl(ringptr, dev)) {
1345 return; /* None available, return */
1346 }
1347
1348 /* Hand this PDL over to the card */
1349 /* Note: This needs performance page selected! */
1350 #ifdef HP100_DEBUG_BM
1351 printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
1352 dev->name, lp->rxrcommit, (u_int) ringptr->pdl,
1353 (u_int) ringptr->pdl_paddr, (u_int) ringptr->pdl[3]);
1354 #endif
1355
1356 hp100_outl((u32) ringptr->pdl_paddr, RX_PDA);
1357
1358 lp->rxrcommit += 1;
1359 lp->rxrtail = ringptr->next;
1360 }
1361 }
1362
1363 /*
1364 * BM_shutdown - shutdown bus mastering and leave chip in reset state
1365 */
1366
1367 static void hp100_BM_shutdown(struct net_device *dev)
1368 {
1369 int ioaddr = dev->base_addr;
1370 struct hp100_private *lp = netdev_priv(dev);
1371 unsigned long time;
1372
1373 #ifdef HP100_DEBUG_B
1374 hp100_outw(0x4209, TRACE);
1375 printk("hp100: %s: bm shutdown\n", dev->name);
1376 #endif
1377
1378 hp100_page(PERFORMANCE);
1379 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
1380 hp100_outw(0xffff, IRQ_STATUS); /* Ack all ints */
1381
1382 /* Ensure Interrupts are off */
1383 hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
1384
1385 /* Disable all MAC activity */
1386 hp100_page(MAC_CTRL);
1387 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
1388
1389 /* If cascade MMU is not already in reset */
1390 if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
1391 /* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
1392 * MMU pointers will not be reset out from underneath
1393 */
1394 hp100_page(MAC_CTRL);
1395 for (time = 0; time < 5000; time++) {
1396 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE))
1397 break;
1398 }
1399
1400 /* Shutdown algorithm depends on the generation of Cascade */
1401 if (lp->chip == HP100_CHIPID_LASSEN) { /* ETR shutdown/reset */
1402 /* Disable Busmaster mode and wait for bit to go to zero. */
1403 hp100_page(HW_MAP);
1404 hp100_andb(~HP100_BM_MASTER, BM);
1405 /* 100 ms timeout */
1406 for (time = 0; time < 32000; time++) {
1407 if (0 == (hp100_inb(BM) & HP100_BM_MASTER))
1408 break;
1409 }
1410 } else { /* Shasta or Rainier Shutdown/Reset */
1411 /* To ensure all bus master inloading activity has ceased,
1412 * wait for no Rx PDAs or no Rx packets on card.
1413 */
1414 hp100_page(PERFORMANCE);
1415 /* 100 ms timeout */
1416 for (time = 0; time < 10000; time++) {
1417 /* RX_PDL: PDLs not executed. */
1418 /* RX_PKT_CNT: RX'd packets on card. */
1419 if ((hp100_inb(RX_PDL) == 0) && (hp100_inb(RX_PKT_CNT) == 0))
1420 break;
1421 }
1422
1423 if (time >= 10000)
1424 printk("hp100: %s: BM shutdown error.\n", dev->name);
1425
1426 /* To ensure all bus master outloading activity has ceased,
1427 * wait until the Tx PDA count goes to zero or no more Tx space
1428 * available in the Tx region of the card.
1429 */
1430 /* 100 ms timeout */
1431 for (time = 0; time < 10000; time++) {
1432 if ((0 == hp100_inb(TX_PKT_CNT)) &&
1433 (0 != (hp100_inb(TX_MEM_FREE) & HP100_AUTO_COMPARE)))
1434 break;
1435 }
1436
1437 /* Disable Busmaster mode */
1438 hp100_page(HW_MAP);
1439 hp100_andb(~HP100_BM_MASTER, BM);
1440 } /* end of shutdown procedure for non-etr parts */
1441
1442 hp100_cascade_reset(dev, 1);
1443 }
1444 hp100_page(PERFORMANCE);
1445 /* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
1446 /* Busmaster mode should be shut down now. */
1447 }
1448
1449 static int hp100_check_lan(struct net_device *dev)
1450 {
1451 struct hp100_private *lp = netdev_priv(dev);
1452
1453 if (lp->lan_type < 0) { /* no LAN type detected yet? */
1454 hp100_stop_interface(dev);
1455 if ((lp->lan_type = hp100_sense_lan(dev)) < 0) {
1456 printk("hp100: %s: no connection found - check wire\n", dev->name);
1457 hp100_start_interface(dev); /* 10Mb/s RX packets maybe handled */
1458 return -EIO;
1459 }
1460 if (lp->lan_type == HP100_LAN_100)
1461 lp->hub_status = hp100_login_to_vg_hub(dev, 0); /* relogin */
1462 hp100_start_interface(dev);
1463 }
1464 return 0;
1465 }
1466
1467 /*
1468 * transmit functions
1469 */
1470
1471 /* tx function for busmaster mode */
1472 static int hp100_start_xmit_bm(struct sk_buff *skb, struct net_device *dev)
1473 {
1474 unsigned long flags;
1475 int i, ok_flag;
1476 int ioaddr = dev->base_addr;
1477 struct hp100_private *lp = netdev_priv(dev);
1478 hp100_ring_t *ringptr;
1479
1480 #ifdef HP100_DEBUG_B
1481 hp100_outw(0x4210, TRACE);
1482 printk("hp100: %s: start_xmit_bm\n", dev->name);
1483 #endif
1484
1485 if (skb == NULL) {
1486 return 0;
1487 }
1488
1489 if (skb->len <= 0)
1490 return 0;
1491
1492 if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
1493 return 0;
1494
1495 /* Get Tx ring tail pointer */
1496 if (lp->txrtail->next == lp->txrhead) {
1497 /* No memory. */
1498 #ifdef HP100_DEBUG
1499 printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
1500 #endif
1501 /* not waited long enough since last tx? */
1502 if (time_before(jiffies, dev->trans_start + HZ))
1503 return -EAGAIN;
1504
1505 if (hp100_check_lan(dev))
1506 return -EIO;
1507
1508 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1509 /* we have a 100Mb/s adapter but it isn't connected to hub */
1510 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1511 hp100_stop_interface(dev);
1512 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1513 hp100_start_interface(dev);
1514 } else {
1515 spin_lock_irqsave(&lp->lock, flags);
1516 hp100_ints_off(); /* Useful ? Jean II */
1517 i = hp100_sense_lan(dev);
1518 hp100_ints_on();
1519 spin_unlock_irqrestore(&lp->lock, flags);
1520 if (i == HP100_LAN_ERR)
1521 printk("hp100: %s: link down detected\n", dev->name);
1522 else if (lp->lan_type != i) { /* cable change! */
1523 /* it's very hard - all network settings must be changed!!! */
1524 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1525 lp->lan_type = i;
1526 hp100_stop_interface(dev);
1527 if (lp->lan_type == HP100_LAN_100)
1528 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1529 hp100_start_interface(dev);
1530 } else {
1531 printk("hp100: %s: interface reset\n", dev->name);
1532 hp100_stop_interface(dev);
1533 if (lp->lan_type == HP100_LAN_100)
1534 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1535 hp100_start_interface(dev);
1536 }
1537 }
1538
1539 dev->trans_start = jiffies;
1540 return -EAGAIN;
1541 }
1542
1543 /*
1544 * we have to turn int's off before modifying this, otherwise
1545 * a tx_pdl_cleanup could occur at the same time
1546 */
1547 spin_lock_irqsave(&lp->lock, flags);
1548 ringptr = lp->txrtail;
1549 lp->txrtail = ringptr->next;
1550
1551 /* Check whether packet has minimal packet size */
1552 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1553 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1554
1555 ringptr->skb = skb;
1556 ringptr->pdl[0] = ((1 << 16) | i); /* PDH: 1 Fragment & length */
1557 if (lp->chip == HP100_CHIPID_SHASTA) {
1558 /* TODO:Could someone who has the EISA card please check if this works? */
1559 ringptr->pdl[2] = i;
1560 } else { /* Lassen */
1561 /* In the PDL, don't use the padded size but the real packet size: */
1562 ringptr->pdl[2] = skb->len; /* 1st Frag: Length of frag */
1563 }
1564 /* Conversion to new PCI API : map skbuf data to PCI bus.
1565 * Doc says it's OK for EISA as well - Jean II */
1566 ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
1567
1568 /* Hand this PDL to the card. */
1569 hp100_outl(ringptr->pdl_paddr, TX_PDA_L); /* Low Prio. Queue */
1570
1571 lp->txrcommit++;
1572 spin_unlock_irqrestore(&lp->lock, flags);
1573
1574 /* Update statistics */
1575 lp->stats.tx_packets++;
1576 lp->stats.tx_bytes += skb->len;
1577 dev->trans_start = jiffies;
1578
1579 return 0;
1580 }
1581
1582
1583 /* clean_txring checks if packets have been sent by the card by reading
1584 * the TX_PDL register from the performance page and comparing it to the
1585 * number of commited packets. It then frees the skb's of the packets that
1586 * obviously have been sent to the network.
1587 *
1588 * Needs the PERFORMANCE page selected.
1589 */
1590 static void hp100_clean_txring(struct net_device *dev)
1591 {
1592 struct hp100_private *lp = netdev_priv(dev);
1593 int ioaddr = dev->base_addr;
1594 int donecount;
1595
1596 #ifdef HP100_DEBUG_B
1597 hp100_outw(0x4211, TRACE);
1598 printk("hp100: %s: clean txring\n", dev->name);
1599 #endif
1600
1601 /* How many PDLs have been transmitted? */
1602 donecount = (lp->txrcommit) - hp100_inb(TX_PDL);
1603
1604 #ifdef HP100_DEBUG
1605 if (donecount > MAX_TX_PDL)
1606 printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n", dev->name);
1607 #endif
1608
1609 for (; 0 != donecount; donecount--) {
1610 #ifdef HP100_DEBUG_BM
1611 printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
1612 dev->name, (u_int) lp->txrhead->skb->data,
1613 lp->txrcommit, hp100_inb(TX_PDL), donecount);
1614 #endif
1615 /* Conversion to new PCI API : NOP */
1616 pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
1617 dev_kfree_skb_any(lp->txrhead->skb);
1618 lp->txrhead->skb = (void *) NULL;
1619 lp->txrhead = lp->txrhead->next;
1620 lp->txrcommit--;
1621 }
1622 }
1623
1624 /* tx function for slave modes */
1625 static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev)
1626 {
1627 unsigned long flags;
1628 int i, ok_flag;
1629 int ioaddr = dev->base_addr;
1630 u_short val;
1631 struct hp100_private *lp = netdev_priv(dev);
1632
1633 #ifdef HP100_DEBUG_B
1634 hp100_outw(0x4212, TRACE);
1635 printk("hp100: %s: start_xmit\n", dev->name);
1636 #endif
1637
1638 if (skb == NULL) {
1639 return 0;
1640 }
1641
1642 if (skb->len <= 0)
1643 return 0;
1644
1645 if (hp100_check_lan(dev))
1646 return -EIO;
1647
1648 /* If there is not enough free memory on the card... */
1649 i = hp100_inl(TX_MEM_FREE) & 0x7fffffff;
1650 if (!(((i / 2) - 539) > (skb->len + 16) && (hp100_inb(TX_PKT_CNT) < 255))) {
1651 #ifdef HP100_DEBUG
1652 printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
1653 #endif
1654 /* not waited long enough since last failed tx try? */
1655 if (time_before(jiffies, dev->trans_start + HZ)) {
1656 #ifdef HP100_DEBUG
1657 printk("hp100: %s: trans_start timing problem\n",
1658 dev->name);
1659 #endif
1660 return -EAGAIN;
1661 }
1662 if (lp->lan_type == HP100_LAN_100 && lp->hub_status < 0) {
1663 /* we have a 100Mb/s adapter but it isn't connected to hub */
1664 printk("hp100: %s: login to 100Mb/s hub retry\n", dev->name);
1665 hp100_stop_interface(dev);
1666 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1667 hp100_start_interface(dev);
1668 } else {
1669 spin_lock_irqsave(&lp->lock, flags);
1670 hp100_ints_off(); /* Useful ? Jean II */
1671 i = hp100_sense_lan(dev);
1672 hp100_ints_on();
1673 spin_unlock_irqrestore(&lp->lock, flags);
1674 if (i == HP100_LAN_ERR)
1675 printk("hp100: %s: link down detected\n", dev->name);
1676 else if (lp->lan_type != i) { /* cable change! */
1677 /* it's very hard - all network setting must be changed!!! */
1678 printk("hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name);
1679 lp->lan_type = i;
1680 hp100_stop_interface(dev);
1681 if (lp->lan_type == HP100_LAN_100)
1682 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1683 hp100_start_interface(dev);
1684 } else {
1685 printk("hp100: %s: interface reset\n", dev->name);
1686 hp100_stop_interface(dev);
1687 if (lp->lan_type == HP100_LAN_100)
1688 lp->hub_status = hp100_login_to_vg_hub(dev, 0);
1689 hp100_start_interface(dev);
1690 mdelay(1);
1691 }
1692 }
1693 dev->trans_start = jiffies;
1694 return -EAGAIN;
1695 }
1696
1697 for (i = 0; i < 6000 && (hp100_inb(OPTION_MSW) & HP100_TX_CMD); i++) {
1698 #ifdef HP100_DEBUG_TX
1699 printk("hp100: %s: start_xmit: busy\n", dev->name);
1700 #endif
1701 }
1702
1703 spin_lock_irqsave(&lp->lock, flags);
1704 hp100_ints_off();
1705 val = hp100_inw(IRQ_STATUS);
1706 /* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
1707 * when the current packet being transmitted on the wire is completed. */
1708 hp100_outw(HP100_TX_COMPLETE, IRQ_STATUS);
1709 #ifdef HP100_DEBUG_TX
1710 printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",
1711 dev->name, val, hp100_inw(IRQ_MASK), (int) skb->len);
1712 #endif
1713
1714 ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
1715 i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
1716
1717 hp100_outw(i, DATA32); /* tell card the total packet length */
1718 hp100_outw(i, FRAGMENT_LEN); /* and first/only fragment length */
1719
1720 if (lp->mode == 2) { /* memory mapped */
1721 /* Note: The J2585B needs alignment to 32bits here! */
1722 memcpy_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
1723 if (!ok_flag)
1724 memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
1725 } else { /* programmed i/o */
1726 outsl(ioaddr + HP100_REG_DATA32, skb->data,
1727 (skb->len + 3) >> 2);
1728 if (!ok_flag)
1729 for (i = (skb->len + 3) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4)
1730 hp100_outl(0, DATA32);
1731 }
1732
1733 hp100_outb(HP100_TX_CMD | HP100_SET_LB, OPTION_MSW); /* send packet */
1734
1735 lp->stats.tx_packets++;
1736 lp->stats.tx_bytes += skb->len;
1737 dev->trans_start = jiffies;
1738 hp100_ints_on();
1739 spin_unlock_irqrestore(&lp->lock, flags);
1740
1741 dev_kfree_skb_any(skb);
1742
1743 #ifdef HP100_DEBUG_TX
1744 printk("hp100: %s: start_xmit: end\n", dev->name);
1745 #endif
1746
1747 return 0;
1748 }
1749
1750
1751 /*
1752 * Receive Function (Non-Busmaster mode)
1753 * Called when an "Receive Packet" interrupt occurs, i.e. the receive
1754 * packet counter is non-zero.
1755 * For non-busmaster, this function does the whole work of transfering
1756 * the packet to the host memory and then up to higher layers via skb
1757 * and netif_rx.
1758 */
1759
1760 static void hp100_rx(struct net_device *dev)
1761 {
1762 int packets, pkt_len;
1763 int ioaddr = dev->base_addr;
1764 struct hp100_private *lp = netdev_priv(dev);
1765 u_int header;
1766 struct sk_buff *skb;
1767
1768 #ifdef DEBUG_B
1769 hp100_outw(0x4213, TRACE);
1770 printk("hp100: %s: rx\n", dev->name);
1771 #endif
1772
1773 /* First get indication of received lan packet */
1774 /* RX_PKT_CND indicates the number of packets which have been fully */
1775 /* received onto the card but have not been fully transferred of the card */
1776 packets = hp100_inb(RX_PKT_CNT);
1777 #ifdef HP100_DEBUG_RX
1778 if (packets > 1)
1779 printk("hp100: %s: rx: waiting packets = %d\n", dev->name, packets);
1780 #endif
1781
1782 while (packets-- > 0) {
1783 /* If ADV_NXT_PKT is still set, we have to wait until the card has */
1784 /* really advanced to the next packet. */
1785 for (pkt_len = 0; pkt_len < 6000 && (hp100_inb(OPTION_MSW) & HP100_ADV_NXT_PKT); pkt_len++) {
1786 #ifdef HP100_DEBUG_RX
1787 printk ("hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets);
1788 #endif
1789 }
1790
1791 /* First we get the header, which contains information about the */
1792 /* actual length of the received packet. */
1793 if (lp->mode == 2) { /* memory mapped mode */
1794 header = readl(lp->mem_ptr_virt);
1795 } else /* programmed i/o */
1796 header = hp100_inl(DATA32);
1797
1798 pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
1799
1800 #ifdef HP100_DEBUG_RX
1801 printk("hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
1802 dev->name, header & HP100_PKT_LEN_MASK,
1803 (header >> 16) & 0xfff8, (header >> 16) & 7);
1804 #endif
1805
1806 /* Now we allocate the skb and transfer the data into it. */
1807 skb = dev_alloc_skb(pkt_len+2);
1808 if (skb == NULL) { /* Not enough memory->drop packet */
1809 #ifdef HP100_DEBUG
1810 printk("hp100: %s: rx: couldn't allocate a sk_buff of size %d\n",
1811 dev->name, pkt_len);
1812 #endif
1813 lp->stats.rx_dropped++;
1814 } else { /* skb successfully allocated */
1815
1816 u_char *ptr;
1817
1818 skb_reserve(skb,2);
1819
1820 /* ptr to start of the sk_buff data area */
1821 skb_put(skb, pkt_len);
1822 ptr = skb->data;
1823
1824 /* Now transfer the data from the card into that area */
1825 if (lp->mode == 2)
1826 memcpy_fromio(ptr, lp->mem_ptr_virt,pkt_len);
1827 else /* io mapped */
1828 insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
1829
1830 skb->protocol = eth_type_trans(skb, dev);
1831
1832 #ifdef HP100_DEBUG_RX
1833 printk("hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1834 dev->name, ptr[0], ptr[1], ptr[2], ptr[3],
1835 ptr[4], ptr[5], ptr[6], ptr[7], ptr[8],
1836 ptr[9], ptr[10], ptr[11]);
1837 #endif
1838 netif_rx(skb);
1839 dev->last_rx = jiffies;
1840 lp->stats.rx_packets++;
1841 lp->stats.rx_bytes += pkt_len;
1842 }
1843
1844 /* Indicate the card that we have got the packet */
1845 hp100_outb(HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW);
1846
1847 switch (header & 0x00070000) {
1848 case (HP100_MULTI_ADDR_HASH << 16):
1849 case (HP100_MULTI_ADDR_NO_HASH << 16):
1850 lp->stats.multicast++;
1851 break;
1852 }
1853 } /* end of while(there are packets) loop */
1854 #ifdef HP100_DEBUG_RX
1855 printk("hp100_rx: %s: end\n", dev->name);
1856 #endif
1857 }
1858
1859 /*
1860 * Receive Function for Busmaster Mode
1861 */
1862 static void hp100_rx_bm(struct net_device *dev)
1863 {
1864 int ioaddr = dev->base_addr;
1865 struct hp100_private *lp = netdev_priv(dev);
1866 hp100_ring_t *ptr;
1867 u_int header;
1868 int pkt_len;
1869
1870 #ifdef HP100_DEBUG_B
1871 hp100_outw(0x4214, TRACE);
1872 printk("hp100: %s: rx_bm\n", dev->name);
1873 #endif
1874
1875 #ifdef HP100_DEBUG
1876 if (0 == lp->rxrcommit) {
1877 printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
1878 return;
1879 } else
1880 /* RX_PKT_CNT states how many PDLs are currently formatted and available to
1881 * the cards BM engine */
1882 if ((hp100_inw(RX_PKT_CNT) & 0x00ff) >= lp->rxrcommit) {
1883 printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n",
1884 dev->name, hp100_inw(RX_PKT_CNT) & 0x00ff,
1885 lp->rxrcommit);
1886 return;
1887 }
1888 #endif
1889
1890 while ((lp->rxrcommit > hp100_inb(RX_PDL))) {
1891 /*
1892 * The packet was received into the pdl pointed to by lp->rxrhead (
1893 * the oldest pdl in the ring
1894 */
1895
1896 /* First we get the header, which contains information about the */
1897 /* actual length of the received packet. */
1898
1899 ptr = lp->rxrhead;
1900
1901 header = *(ptr->pdl - 1);
1902 pkt_len = (header & HP100_PKT_LEN_MASK);
1903
1904 /* Conversion to new PCI API : NOP */
1905 pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
1906
1907 #ifdef HP100_DEBUG_BM
1908 printk("hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
1909 dev->name, (u_int) (ptr->pdl - 1), (u_int) header,
1910 pkt_len, (header >> 16) & 0xfff8, (header >> 16) & 7);
1911 printk("hp100: %s: RX_PDL_COUNT:0x%x TX_PDL_COUNT:0x%x, RX_PKT_CNT=0x%x PDH=0x%x, Data@0x%x len=0x%x\n",
1912 dev->name, hp100_inb(RX_PDL), hp100_inb(TX_PDL),
1913 hp100_inb(RX_PKT_CNT), (u_int) * (ptr->pdl),
1914 (u_int) * (ptr->pdl + 3), (u_int) * (ptr->pdl + 4));
1915 #endif
1916
1917 if ((pkt_len >= MIN_ETHER_SIZE) &&
1918 (pkt_len <= MAX_ETHER_SIZE)) {
1919 if (ptr->skb == NULL) {
1920 printk("hp100: %s: rx_bm: skb null\n", dev->name);
1921 /* can happen if we only allocated room for the pdh due to memory shortage. */
1922 lp->stats.rx_dropped++;
1923 } else {
1924 skb_trim(ptr->skb, pkt_len); /* Shorten it */
1925 ptr->skb->protocol =
1926 eth_type_trans(ptr->skb, dev);
1927
1928 netif_rx(ptr->skb); /* Up and away... */
1929
1930 dev->last_rx = jiffies;
1931 lp->stats.rx_packets++;
1932 lp->stats.rx_bytes += pkt_len;
1933 }
1934
1935 switch (header & 0x00070000) {
1936 case (HP100_MULTI_ADDR_HASH << 16):
1937 case (HP100_MULTI_ADDR_NO_HASH << 16):
1938 lp->stats.multicast++;
1939 break;
1940 }
1941 } else {
1942 #ifdef HP100_DEBUG
1943 printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n", dev->name, pkt_len);
1944 #endif
1945 if (ptr->skb != NULL)
1946 dev_kfree_skb_any(ptr->skb);
1947 lp->stats.rx_errors++;
1948 }
1949
1950 lp->rxrhead = lp->rxrhead->next;
1951
1952 /* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
1953 if (0 == hp100_build_rx_pdl(lp->rxrtail, dev)) {
1954 /* No space for skb, header can still be received. */
1955 #ifdef HP100_DEBUG
1956 printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
1957 #endif
1958 return;
1959 } else { /* successfully allocated new PDL - put it in ringlist at tail. */
1960 hp100_outl((u32) lp->rxrtail->pdl_paddr, RX_PDA);
1961 lp->rxrtail = lp->rxrtail->next;
1962 }
1963
1964 }
1965 }
1966
1967 /*
1968 * statistics
1969 */
1970 static struct net_device_stats *hp100_get_stats(struct net_device *dev)
1971 {
1972 unsigned long flags;
1973 int ioaddr = dev->base_addr;
1974 struct hp100_private *lp = netdev_priv(dev);
1975
1976 #ifdef HP100_DEBUG_B
1977 hp100_outw(0x4215, TRACE);
1978 #endif
1979
1980 spin_lock_irqsave(&lp->lock, flags);
1981 hp100_ints_off(); /* Useful ? Jean II */
1982 hp100_update_stats(dev);
1983 hp100_ints_on();
1984 spin_unlock_irqrestore(&lp->lock, flags);
1985 return &(lp->stats);
1986 }
1987
1988 static void hp100_update_stats(struct net_device *dev)
1989 {
1990 int ioaddr = dev->base_addr;
1991 u_short val;
1992 struct hp100_private *lp = netdev_priv(dev);
1993
1994 #ifdef HP100_DEBUG_B
1995 hp100_outw(0x4216, TRACE);
1996 printk("hp100: %s: update-stats\n", dev->name);
1997 #endif
1998
1999 /* Note: Statistics counters clear when read. */
2000 hp100_page(MAC_CTRL);
2001 val = hp100_inw(DROPPED) & 0x0fff;
2002 lp->stats.rx_errors += val;
2003 lp->stats.rx_over_errors += val;
2004 val = hp100_inb(CRC);
2005 lp->stats.rx_errors += val;
2006 lp->stats.rx_crc_errors += val;
2007 val = hp100_inb(ABORT);
2008 lp->stats.tx_errors += val;
2009 lp->stats.tx_aborted_errors += val;
2010 hp100_page(PERFORMANCE);
2011 }
2012
2013 static void hp100_misc_interrupt(struct net_device *dev)
2014 {
2015 #ifdef HP100_DEBUG_B
2016 int ioaddr = dev->base_addr;
2017 #endif
2018 struct hp100_private *lp = netdev_priv(dev);
2019
2020 #ifdef HP100_DEBUG_B
2021 int ioaddr = dev->base_addr;
2022 hp100_outw(0x4216, TRACE);
2023 printk("hp100: %s: misc_interrupt\n", dev->name);
2024 #endif
2025
2026 /* Note: Statistics counters clear when read. */
2027 lp->stats.rx_errors++;
2028 lp->stats.tx_errors++;
2029 }
2030
2031 static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
2032 {
2033 unsigned long flags;
2034
2035 #ifdef HP100_DEBUG_B
2036 hp100_outw(0x4217, TRACE);
2037 printk("hp100: %s: clear_stats\n", dev->name);
2038 #endif
2039
2040 spin_lock_irqsave(&lp->lock, flags);
2041 hp100_page(MAC_CTRL); /* get all statistics bytes */
2042 hp100_inw(DROPPED);
2043 hp100_inb(CRC);
2044 hp100_inb(ABORT);
2045 hp100_page(PERFORMANCE);
2046 spin_unlock_irqrestore(&lp->lock, flags);
2047 }
2048
2049
2050 /*
2051 * multicast setup
2052 */
2053
2054 /*
2055 * Set or clear the multicast filter for this adapter.
2056 */
2057
2058 static void hp100_set_multicast_list(struct net_device *dev)
2059 {
2060 unsigned long flags;
2061 int ioaddr = dev->base_addr;
2062 struct hp100_private *lp = netdev_priv(dev);
2063
2064 #ifdef HP100_DEBUG_B
2065 hp100_outw(0x4218, TRACE);
2066 printk("hp100: %s: set_mc_list\n", dev->name);
2067 #endif
2068
2069 spin_lock_irqsave(&lp->lock, flags);
2070 hp100_ints_off();
2071 hp100_page(MAC_CTRL);
2072 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1); /* stop rx/tx */
2073
2074 if (dev->flags & IFF_PROMISC) {
2075 lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
2076 lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
2077 memset(&lp->hash_bytes, 0xff, 8);
2078 } else if (dev->mc_count || (dev->flags & IFF_ALLMULTI)) {
2079 lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
2080 lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
2081 #ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
2082 if (dev->flags & IFF_ALLMULTI) {
2083 /* set hash filter to receive all multicast packets */
2084 memset(&lp->hash_bytes, 0xff, 8);
2085 } else {
2086 int i, j, idx;
2087 u_char *addrs;
2088 struct dev_mc_list *dmi;
2089
2090 memset(&lp->hash_bytes, 0x00, 8);
2091 #ifdef HP100_DEBUG
2092 printk("hp100: %s: computing hash filter - mc_count = %i\n", dev->name, dev->mc_count);
2093 #endif
2094 for (i = 0, dmi = dev->mc_list; i < dev->mc_count; i++, dmi = dmi->next) {
2095 addrs = dmi->dmi_addr;
2096 if ((*addrs & 0x01) == 0x01) { /* multicast address? */
2097 #ifdef HP100_DEBUG
2098 printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
2099 dev->name, addrs[0], addrs[1], addrs[2],
2100 addrs[3], addrs[4], addrs[5]);
2101 #endif
2102 for (j = idx = 0; j < 6; j++) {
2103 idx ^= *addrs++ & 0x3f;
2104 printk(":%02x:", idx);
2105 }
2106 #ifdef HP100_DEBUG
2107 printk("idx = %i\n", idx);
2108 #endif
2109 lp->hash_bytes[idx >> 3] |= (1 << (idx & 7));
2110 }
2111 }
2112 }
2113 #else
2114 memset(&lp->hash_bytes, 0xff, 8);
2115 #endif
2116 } else {
2117 lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
2118 lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
2119 memset(&lp->hash_bytes, 0x00, 8);
2120 }
2121
2122 if (((hp100_inb(MAC_CFG_1) & 0x0f) != lp->mac1_mode) ||
2123 (hp100_inb(MAC_CFG_2) != lp->mac2_mode)) {
2124 int i;
2125
2126 hp100_outb(lp->mac2_mode, MAC_CFG_2);
2127 hp100_andb(HP100_MAC1MODEMASK, MAC_CFG_1); /* clear mac1 mode bits */
2128 hp100_orb(lp->mac1_mode, MAC_CFG_1); /* and set the new mode */
2129
2130 hp100_page(MAC_ADDRESS);
2131 for (i = 0; i < 8; i++)
2132 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2133 #ifdef HP100_DEBUG
2134 printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2135 dev->name, lp->mac1_mode, lp->mac2_mode,
2136 lp->hash_bytes[0], lp->hash_bytes[1],
2137 lp->hash_bytes[2], lp->hash_bytes[3],
2138 lp->hash_bytes[4], lp->hash_bytes[5],
2139 lp->hash_bytes[6], lp->hash_bytes[7]);
2140 #endif
2141
2142 if (lp->lan_type == HP100_LAN_100) {
2143 #ifdef HP100_DEBUG
2144 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2145 #endif
2146 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2147 }
2148 } else {
2149 int i;
2150 u_char old_hash_bytes[8];
2151
2152 hp100_page(MAC_ADDRESS);
2153 for (i = 0; i < 8; i++)
2154 old_hash_bytes[i] = hp100_inb(HASH_BYTE0 + i);
2155 if (memcmp(old_hash_bytes, &lp->hash_bytes, 8)) {
2156 for (i = 0; i < 8; i++)
2157 hp100_outb(lp->hash_bytes[i], HASH_BYTE0 + i);
2158 #ifdef HP100_DEBUG
2159 printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
2160 dev->name, lp->hash_bytes[0],
2161 lp->hash_bytes[1], lp->hash_bytes[2],
2162 lp->hash_bytes[3], lp->hash_bytes[4],
2163 lp->hash_bytes[5], lp->hash_bytes[6],
2164 lp->hash_bytes[7]);
2165 #endif
2166
2167 if (lp->lan_type == HP100_LAN_100) {
2168 #ifdef HP100_DEBUG
2169 printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
2170 #endif
2171 lp->hub_status = hp100_login_to_vg_hub(dev, 1); /* force a relogin to the hub */
2172 }
2173 }
2174 }
2175
2176 hp100_page(MAC_CTRL);
2177 hp100_orb(HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
2178 HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1); /* enable tx */
2179
2180 hp100_page(PERFORMANCE);
2181 hp100_ints_on();
2182 spin_unlock_irqrestore(&lp->lock, flags);
2183 }
2184
2185 /*
2186 * hardware interrupt handling
2187 */
2188
2189 static irqreturn_t hp100_interrupt(int irq, void *dev_id)
2190 {
2191 struct net_device *dev = (struct net_device *) dev_id;
2192 struct hp100_private *lp = netdev_priv(dev);
2193
2194 int ioaddr;
2195 u_int val;
2196
2197 if (dev == NULL)
2198 return IRQ_NONE;
2199 ioaddr = dev->base_addr;
2200
2201 spin_lock(&lp->lock);
2202
2203 hp100_ints_off();
2204
2205 #ifdef HP100_DEBUG_B
2206 hp100_outw(0x4219, TRACE);
2207 #endif
2208
2209 /* hp100_page( PERFORMANCE ); */
2210 val = hp100_inw(IRQ_STATUS);
2211 #ifdef HP100_DEBUG_IRQ
2212 printk("hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
2213 dev->name, lp->mode, (u_int) val, hp100_inb(RX_PKT_CNT),
2214 hp100_inb(RX_PDL), hp100_inb(TX_PKT_CNT), hp100_inb(TX_PDL));
2215 #endif
2216
2217 if (val == 0) { /* might be a shared interrupt */
2218 spin_unlock(&lp->lock);
2219 hp100_ints_on();
2220 return IRQ_NONE;
2221 }
2222 /* We're only interested in those interrupts we really enabled. */
2223 /* val &= hp100_inw( IRQ_MASK ); */
2224
2225 /*
2226 * RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
2227 * is considered executed whenever the RX_PDL data structure is no longer
2228 * needed.
2229 */
2230 if (val & HP100_RX_PDL_FILL_COMPL) {
2231 if (lp->mode == 1)
2232 hp100_rx_bm(dev);
2233 else {
2234 printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
2235 }
2236 }
2237
2238 /*
2239 * The RX_PACKET interrupt is set, when the receive packet counter is
2240 * non zero. We use this interrupt for receiving in slave mode. In
2241 * busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
2242 * interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
2243 * we somehow have missed a rx_pdl_fill_compl interrupt.
2244 */
2245
2246 if (val & HP100_RX_PACKET) { /* Receive Packet Counter is non zero */
2247 if (lp->mode != 1) /* non busmaster */
2248 hp100_rx(dev);
2249 else if (!(val & HP100_RX_PDL_FILL_COMPL)) {
2250 /* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
2251 hp100_rx_bm(dev);
2252 }
2253 }
2254
2255 /*
2256 * Ack. that we have noticed the interrupt and thereby allow next one.
2257 * Note that this is now done after the slave rx function, since first
2258 * acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
2259 * on the J2573.
2260 */
2261 hp100_outw(val, IRQ_STATUS);
2262
2263 /*
2264 * RX_ERROR is set when a packet is dropped due to no memory resources on
2265 * the card or when a RCV_ERR occurs.
2266 * TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
2267 * only in the 802.3 MAC and happens when 16 collisions occur during a TX
2268 */
2269 if (val & (HP100_TX_ERROR | HP100_RX_ERROR)) {
2270 #ifdef HP100_DEBUG_IRQ
2271 printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
2272 #endif
2273 hp100_update_stats(dev);
2274 if (lp->mode == 1) {
2275 hp100_rxfill(dev);
2276 hp100_clean_txring(dev);
2277 }
2278 }
2279
2280 /*
2281 * RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
2282 */
2283 if ((lp->mode == 1) && (val & (HP100_RX_PDA_ZERO)))
2284 hp100_rxfill(dev);
2285
2286 /*
2287 * HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
2288 * is completed
2289 */
2290 if ((lp->mode == 1) && (val & (HP100_TX_COMPLETE)))
2291 hp100_clean_txring(dev);
2292
2293 /*
2294 * MISC_ERROR is set when either the LAN link goes down or a detected
2295 * bus error occurs.
2296 */
2297 if (val & HP100_MISC_ERROR) { /* New for J2585B */
2298 #ifdef HP100_DEBUG_IRQ
2299 printk
2300 ("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
2301 dev->name);
2302 #endif
2303 if (lp->mode == 1) {
2304 hp100_clean_txring(dev);
2305 hp100_rxfill(dev);
2306 }
2307 hp100_misc_interrupt(dev);
2308 }
2309
2310 spin_unlock(&lp->lock);
2311 hp100_ints_on();
2312 return IRQ_HANDLED;
2313 }
2314
2315 /*
2316 * some misc functions
2317 */
2318
2319 static void hp100_start_interface(struct net_device *dev)
2320 {
2321 unsigned long flags;
2322 int ioaddr = dev->base_addr;
2323 struct hp100_private *lp = netdev_priv(dev);
2324
2325 #ifdef HP100_DEBUG_B
2326 hp100_outw(0x4220, TRACE);
2327 printk("hp100: %s: hp100_start_interface\n", dev->name);
2328 #endif
2329
2330 spin_lock_irqsave(&lp->lock, flags);
2331
2332 /* Ensure the adapter does not want to request an interrupt when */
2333 /* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
2334 hp100_page(PERFORMANCE);
2335 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2336 hp100_outw(0xffff, IRQ_STATUS); /* ack all IRQs */
2337 hp100_outw(HP100_FAKE_INT | HP100_INT_EN | HP100_RESET_LB,
2338 OPTION_LSW);
2339 /* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
2340 hp100_outw(HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW);
2341
2342 if (lp->mode == 1) {
2343 /* Make sure BM bit is set... */
2344 hp100_page(HW_MAP);
2345 hp100_orb(HP100_BM_MASTER, BM);
2346 hp100_rxfill(dev);
2347 } else if (lp->mode == 2) {
2348 /* Enable memory mapping. Note: Don't do this when busmaster. */
2349 hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
2350 }
2351
2352 hp100_page(PERFORMANCE);
2353 hp100_outw(0xfefe, IRQ_MASK); /* mask off all ints */
2354 hp100_outw(0xffff, IRQ_STATUS); /* ack IRQ */
2355
2356 /* enable a few interrupts: */
2357 if (lp->mode == 1) { /* busmaster mode */
2358 hp100_outw(HP100_RX_PDL_FILL_COMPL |
2359 HP100_RX_PDA_ZERO | HP100_RX_ERROR |
2360 /* HP100_RX_PACKET | */
2361 /* HP100_RX_EARLY_INT | */ HP100_SET_HB |
2362 /* HP100_TX_PDA_ZERO | */
2363 HP100_TX_COMPLETE |
2364 /* HP100_MISC_ERROR | */
2365 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2366 } else {
2367 hp100_outw(HP100_RX_PACKET |
2368 HP100_RX_ERROR | HP100_SET_HB |
2369 HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK);
2370 }
2371
2372 /* Note : before hp100_set_multicast_list(), because it will play with
2373 * spinlock itself... Jean II */
2374 spin_unlock_irqrestore(&lp->lock, flags);
2375
2376 /* Enable MAC Tx and RX, set MAC modes, ... */
2377 hp100_set_multicast_list(dev);
2378 }
2379
2380 static void hp100_stop_interface(struct net_device *dev)
2381 {
2382 struct hp100_private *lp = netdev_priv(dev);
2383 int ioaddr = dev->base_addr;
2384 u_int val;
2385
2386 #ifdef HP100_DEBUG_B
2387 printk("hp100: %s: hp100_stop_interface\n", dev->name);
2388 hp100_outw(0x4221, TRACE);
2389 #endif
2390
2391 if (lp->mode == 1)
2392 hp100_BM_shutdown(dev);
2393 else {
2394 /* Note: MMAP_DIS will be reenabled by start_interface */
2395 hp100_outw(HP100_INT_EN | HP100_RESET_LB |
2396 HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB,
2397 OPTION_LSW);
2398 val = hp100_inw(OPTION_LSW);
2399
2400 hp100_page(MAC_CTRL);
2401 hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
2402
2403 if (!(val & HP100_HW_RST))
2404 return; /* If reset, imm. return ... */
2405 /* ... else: busy wait until idle */
2406 for (val = 0; val < 6000; val++)
2407 if ((hp100_inb(MAC_CFG_1) & (HP100_TX_IDLE | HP100_RX_IDLE)) == (HP100_TX_IDLE | HP100_RX_IDLE)) {
2408 hp100_page(PERFORMANCE);
2409 return;
2410 }
2411 printk("hp100: %s: hp100_stop_interface - timeout\n", dev->name);
2412 hp100_page(PERFORMANCE);
2413 }
2414 }
2415
2416 static void hp100_load_eeprom(struct net_device *dev, u_short probe_ioaddr)
2417 {
2418 int i;
2419 int ioaddr = probe_ioaddr > 0 ? probe_ioaddr : dev->base_addr;
2420
2421 #ifdef HP100_DEBUG_B
2422 hp100_outw(0x4222, TRACE);
2423 #endif
2424
2425 hp100_page(EEPROM_CTRL);
2426 hp100_andw(~HP100_EEPROM_LOAD, EEPROM_CTRL);
2427 hp100_orw(HP100_EEPROM_LOAD, EEPROM_CTRL);
2428 for (i = 0; i < 10000; i++)
2429 if (!(hp100_inb(OPTION_MSW) & HP100_EE_LOAD))
2430 return;
2431 printk("hp100: %s: hp100_load_eeprom - timeout\n", dev->name);
2432 }
2433
2434 /* Sense connection status.
2435 * return values: LAN_10 - Connected to 10Mbit/s network
2436 * LAN_100 - Connected to 100Mbit/s network
2437 * LAN_ERR - not connected or 100Mbit/s Hub down
2438 */
2439 static int hp100_sense_lan(struct net_device *dev)
2440 {
2441 int ioaddr = dev->base_addr;
2442 u_short val_VG, val_10;
2443 struct hp100_private *lp = netdev_priv(dev);
2444
2445 #ifdef HP100_DEBUG_B
2446 hp100_outw(0x4223, TRACE);
2447 #endif
2448
2449 hp100_page(MAC_CTRL);
2450 val_10 = hp100_inb(10_LAN_CFG_1);
2451 val_VG = hp100_inb(VG_LAN_CFG_1);
2452 hp100_page(PERFORMANCE);
2453 #ifdef HP100_DEBUG
2454 printk("hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n",
2455 dev->name, val_VG, val_10);
2456 #endif
2457
2458 if (val_10 & HP100_LINK_BEAT_ST) /* 10Mb connection is active */
2459 return HP100_LAN_10;
2460
2461 if (val_10 & HP100_AUI_ST) { /* have we BNC or AUI onboard? */
2462 /*
2463 * This can be overriden by dos utility, so if this has no effect,
2464 * perhaps you need to download that utility from HP and set card
2465 * back to "auto detect".
2466 */
2467 val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
2468 hp100_page(MAC_CTRL);
2469 hp100_outb(val_10, 10_LAN_CFG_1);
2470 hp100_page(PERFORMANCE);
2471 return HP100_LAN_COAX;
2472 }
2473
2474 /* Those cards don't have a 100 Mbit connector */
2475 if ( !strcmp(lp->id, "HWP1920") ||
2476 (lp->pci_dev &&
2477 lp->pci_dev->vendor == PCI_VENDOR_ID &&
2478 (lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
2479 lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
2480 return HP100_LAN_ERR;
2481
2482 if (val_VG & HP100_LINK_CABLE_ST) /* Can hear the HUBs tone. */
2483 return HP100_LAN_100;
2484 return HP100_LAN_ERR;
2485 }
2486
2487 static int hp100_down_vg_link(struct net_device *dev)
2488 {
2489 struct hp100_private *lp = netdev_priv(dev);
2490 int ioaddr = dev->base_addr;
2491 unsigned long time;
2492 long savelan, newlan;
2493
2494 #ifdef HP100_DEBUG_B
2495 hp100_outw(0x4224, TRACE);
2496 printk("hp100: %s: down_vg_link\n", dev->name);
2497 #endif
2498
2499 hp100_page(MAC_CTRL);
2500 time = jiffies + (HZ / 4);
2501 do {
2502 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2503 break;
2504 if (!in_interrupt())
2505 schedule_timeout_interruptible(1);
2506 } while (time_after(time, jiffies));
2507
2508 if (time_after_eq(jiffies, time)) /* no signal->no logout */
2509 return 0;
2510
2511 /* Drop the VG Link by clearing the link up cmd and load addr. */
2512
2513 hp100_andb(~(HP100_LOAD_ADDR | HP100_LINK_CMD), VG_LAN_CFG_1);
2514 hp100_orb(HP100_VG_SEL, VG_LAN_CFG_1);
2515
2516 /* Conditionally stall for >250ms on Link-Up Status (to go down) */
2517 time = jiffies + (HZ / 2);
2518 do {
2519 if (!(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2520 break;
2521 if (!in_interrupt())
2522 schedule_timeout_interruptible(1);
2523 } while (time_after(time, jiffies));
2524
2525 #ifdef HP100_DEBUG
2526 if (time_after_eq(jiffies, time))
2527 printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
2528 #endif
2529
2530 /* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
2531 /* logout under traffic (even though all the status bits are cleared), */
2532 /* do this workaround to get the Rev 1 MAC in its idle state */
2533 if (lp->chip == HP100_CHIPID_LASSEN) {
2534 /* Reset VG MAC to insure it leaves the logoff state even if */
2535 /* the Hub is still emitting tones */
2536 hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
2537 udelay(1500); /* wait for >1ms */
2538 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
2539 udelay(1500);
2540 }
2541
2542 /* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
2543 /* to get the VG mac to full reset. This is not req.d with later chips */
2544 /* Note: It will take the between 1 and 2 seconds for the VG mac to be */
2545 /* selected again! This will be left to the connect hub function to */
2546 /* perform if desired. */
2547 if (lp->chip == HP100_CHIPID_LASSEN) {
2548 /* Have to write to 10 and 100VG control registers simultaneously */
2549 savelan = newlan = hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
2550 newlan &= ~(HP100_VG_SEL << 16);
2551 newlan |= (HP100_DOT3_MAC) << 8;
2552 hp100_andb(~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
2553 hp100_outl(newlan, 10_LAN_CFG_1);
2554
2555 /* Conditionally stall for 5sec on VG selected. */
2556 time = jiffies + (HZ * 5);
2557 do {
2558 if (!(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST))
2559 break;
2560 if (!in_interrupt())
2561 schedule_timeout_interruptible(1);
2562 } while (time_after(time, jiffies));
2563
2564 hp100_orb(HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
2565 hp100_outl(savelan, 10_LAN_CFG_1);
2566 }
2567
2568 time = jiffies + (3 * HZ); /* Timeout 3s */
2569 do {
2570 if ((hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST) == 0)
2571 break;
2572 if (!in_interrupt())
2573 schedule_timeout_interruptible(1);
2574 } while (time_after(time, jiffies));
2575
2576 if (time_before_eq(time, jiffies)) {
2577 #ifdef HP100_DEBUG
2578 printk("hp100: %s: down_vg_link: timeout\n", dev->name);
2579 #endif
2580 return -EIO;
2581 }
2582
2583 time = jiffies + (2 * HZ); /* This seems to take a while.... */
2584 do {
2585 if (!in_interrupt())
2586 schedule_timeout_interruptible(1);
2587 } while (time_after(time, jiffies));
2588
2589 return 0;
2590 }
2591
2592 static int hp100_login_to_vg_hub(struct net_device *dev, u_short force_relogin)
2593 {
2594 int ioaddr = dev->base_addr;
2595 struct hp100_private *lp = netdev_priv(dev);
2596 u_short val = 0;
2597 unsigned long time;
2598 int startst;
2599
2600 #ifdef HP100_DEBUG_B
2601 hp100_outw(0x4225, TRACE);
2602 printk("hp100: %s: login_to_vg_hub\n", dev->name);
2603 #endif
2604
2605 /* Initiate a login sequence iff VG MAC is enabled and either Load Address
2606 * bit is zero or the force relogin flag is set (e.g. due to MAC address or
2607 * promiscuous mode change)
2608 */
2609 hp100_page(MAC_CTRL);
2610 startst = hp100_inb(VG_LAN_CFG_1);
2611 if ((force_relogin == 1) || (hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST)) {
2612 #ifdef HP100_DEBUG_TRAINING
2613 printk("hp100: %s: Start training\n", dev->name);
2614 #endif
2615
2616 /* Ensure VG Reset bit is 1 (i.e., do not reset) */
2617 hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1);
2618
2619 /* If Lassen AND auto-select-mode AND VG tones were sensed on */
2620 /* entry then temporarily put them into force 100Mbit mode */
2621 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST))
2622 hp100_andb(~HP100_DOT3_MAC, 10_LAN_CFG_2);
2623
2624 /* Drop the VG link by zeroing Link Up Command and Load Address */
2625 hp100_andb(~(HP100_LINK_CMD /* |HP100_LOAD_ADDR */ ), VG_LAN_CFG_1);
2626
2627 #ifdef HP100_DEBUG_TRAINING
2628 printk("hp100: %s: Bring down the link\n", dev->name);
2629 #endif
2630
2631 /* Wait for link to drop */
2632 time = jiffies + (HZ / 10);
2633 do {
2634 if (~(hp100_inb(VG_LAN_CFG_1) & HP100_LINK_UP_ST))
2635 break;
2636 if (!in_interrupt())
2637 schedule_timeout_interruptible(1);
2638 } while (time_after(time, jiffies));
2639
2640 /* Start an addressed training and optionally request promiscuous port */
2641 if ((dev->flags) & IFF_PROMISC) {
2642 hp100_orb(HP100_PROM_MODE, VG_LAN_CFG_2);
2643 if (lp->chip == HP100_CHIPID_LASSEN)
2644 hp100_orw(HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2645 } else {
2646 hp100_andb(~HP100_PROM_MODE, VG_LAN_CFG_2);
2647 /* For ETR parts we need to reset the prom. bit in the training
2648 * register, otherwise promiscious mode won't be disabled.
2649 */
2650 if (lp->chip == HP100_CHIPID_LASSEN) {
2651 hp100_andw(~HP100_MACRQ_PROMSC, TRAIN_REQUEST);
2652 }
2653 }
2654
2655 /* With ETR parts, frame format request bits can be set. */
2656 if (lp->chip == HP100_CHIPID_LASSEN)
2657 hp100_orb(HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
2658
2659 hp100_orb(HP100_LINK_CMD | HP100_LOAD_ADDR | HP100_VG_RESET, VG_LAN_CFG_1);
2660
2661 /* Note: Next wait could be omitted for Hood and earlier chips under */
2662 /* certain circumstances */
2663 /* TODO: check if hood/earlier and skip wait. */
2664
2665 /* Wait for either short timeout for VG tones or long for login */
2666 /* Wait for the card hardware to signalise link cable status ok... */
2667 hp100_page(MAC_CTRL);
2668 time = jiffies + (1 * HZ); /* 1 sec timeout for cable st */
2669 do {
2670 if (hp100_inb(VG_LAN_CFG_1) & HP100_LINK_CABLE_ST)
2671 break;
2672 if (!in_interrupt())
2673 schedule_timeout_interruptible(1);
2674 } while (time_before(jiffies, time));
2675
2676 if (time_after_eq(jiffies, time)) {
2677 #ifdef HP100_DEBUG_TRAINING
2678 printk("hp100: %s: Link cable status not ok? Training aborted.\n", dev->name);
2679 #endif
2680 } else {
2681 #ifdef HP100_DEBUG_TRAINING
2682 printk
2683 ("hp100: %s: HUB tones detected. Trying to train.\n",
2684 dev->name);
2685 #endif
2686
2687 time = jiffies + (2 * HZ); /* again a timeout */
2688 do {
2689 val = hp100_inb(VG_LAN_CFG_1);
2690 if ((val & (HP100_LINK_UP_ST))) {
2691 #ifdef HP100_DEBUG_TRAINING
2692 printk("hp100: %s: Passed training.\n", dev->name);
2693 #endif
2694 break;
2695 }
2696 if (!in_interrupt())
2697 schedule_timeout_interruptible(1);
2698 } while (time_after(time, jiffies));
2699 }
2700
2701 /* If LINK_UP_ST is set, then we are logged into the hub. */
2702 if (time_before_eq(jiffies, time) && (val & HP100_LINK_UP_ST)) {
2703 #ifdef HP100_DEBUG_TRAINING
2704 printk("hp100: %s: Successfully logged into the HUB.\n", dev->name);
2705 if (lp->chip == HP100_CHIPID_LASSEN) {
2706 val = hp100_inw(TRAIN_ALLOW);
2707 printk("hp100: %s: Card supports 100VG MAC Version \"%s\" ",
2708 dev->name, (hp100_inw(TRAIN_REQUEST) & HP100_CARD_MACVER) ? "802.12" : "Pre");
2709 printk("Driver will use MAC Version \"%s\"\n", (val & HP100_HUB_MACVER) ? "802.12" : "Pre");
2710 printk("hp100: %s: Frame format is %s.\n", dev->name, (val & HP100_MALLOW_FRAMEFMT) ? "802.5" : "802.3");
2711 }
2712 #endif
2713 } else {
2714 /* If LINK_UP_ST is not set, login was not successful */
2715 printk("hp100: %s: Problem logging into the HUB.\n", dev->name);
2716 if (lp->chip == HP100_CHIPID_LASSEN) {
2717 /* Check allowed Register to find out why there is a problem. */
2718 val = hp100_inw(TRAIN_ALLOW); /* won't work on non-ETR card */
2719 #ifdef HP100_DEBUG_TRAINING
2720 printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
2721 #endif
2722 if (val & HP100_MALLOW_ACCDENIED)
2723 printk("hp100: %s: HUB access denied.\n", dev->name);
2724 if (val & HP100_MALLOW_CONFIGURE)
2725 printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
2726 if (val & HP100_MALLOW_DUPADDR)
2727 printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
2728 }
2729 }
2730
2731 /* If we have put the chip into forced 100 Mbit mode earlier, go back */
2732 /* to auto-select mode */
2733
2734 if ((lp->chip == HP100_CHIPID_LASSEN) && (startst & HP100_LINK_CABLE_ST)) {
2735 hp100_page(MAC_CTRL);
2736 hp100_orb(HP100_DOT3_MAC, 10_LAN_CFG_2);
2737 }
2738
2739 val = hp100_inb(VG_LAN_CFG_1);
2740
2741 /* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
2742 hp100_page(PERFORMANCE);
2743 hp100_outw(HP100_MISC_ERROR, IRQ_STATUS);
2744
2745 if (val & HP100_LINK_UP_ST)
2746 return (0); /* login was ok */
2747 else {
2748 printk("hp100: %s: Training failed.\n", dev->name);
2749 hp100_down_vg_link(dev);
2750 return -EIO;
2751 }
2752 }
2753 /* no forced relogin & already link there->no training. */
2754 return -EIO;
2755 }
2756
2757 static void hp100_cascade_reset(struct net_device *dev, u_short enable)
2758 {
2759 int ioaddr = dev->base_addr;
2760 struct hp100_private *lp = netdev_priv(dev);
2761
2762 #ifdef HP100_DEBUG_B
2763 hp100_outw(0x4226, TRACE);
2764 printk("hp100: %s: cascade_reset\n", dev->name);
2765 #endif
2766
2767 if (enable) {
2768 hp100_outw(HP100_HW_RST | HP100_RESET_LB, OPTION_LSW);
2769 if (lp->chip == HP100_CHIPID_LASSEN) {
2770 /* Lassen requires a PCI transmit fifo reset */
2771 hp100_page(HW_MAP);
2772 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2773 hp100_orb(HP100_PCI_RESET, PCICTRL2);
2774 /* Wait for min. 300 ns */
2775 /* we can't use jiffies here, because it may be */
2776 /* that we have disabled the timer... */
2777 udelay(400);
2778 hp100_andb(~HP100_PCI_RESET, PCICTRL2);
2779 hp100_page(PERFORMANCE);
2780 }
2781 } else { /* bring out of reset */
2782 hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
2783 udelay(400);
2784 hp100_page(PERFORMANCE);
2785 }
2786 }
2787
2788 #ifdef HP100_DEBUG
2789 void hp100_RegisterDump(struct net_device *dev)
2790 {
2791 int ioaddr = dev->base_addr;
2792 int Page;
2793 int Register;
2794
2795 /* Dump common registers */
2796 printk("hp100: %s: Cascade Register Dump\n", dev->name);
2797 printk("hardware id #1: 0x%.2x\n", hp100_inb(HW_ID));
2798 printk("hardware id #2/paging: 0x%.2x\n", hp100_inb(PAGING));
2799 printk("option #1: 0x%.4x\n", hp100_inw(OPTION_LSW));
2800 printk("option #2: 0x%.4x\n", hp100_inw(OPTION_MSW));
2801
2802 /* Dump paged registers */
2803 for (Page = 0; Page < 8; Page++) {
2804 /* Dump registers */
2805 printk("page: 0x%.2x\n", Page);
2806 outw(Page, ioaddr + 0x02);
2807 for (Register = 0x8; Register < 0x22; Register += 2) {
2808 /* Display Register contents except data port */
2809 if (((Register != 0x10) && (Register != 0x12)) || (Page > 0)) {
2810 printk("0x%.2x = 0x%.4x\n", Register, inw(ioaddr + Register));
2811 }
2812 }
2813 }
2814 hp100_page(PERFORMANCE);
2815 }
2816 #endif
2817
2818
2819 static void cleanup_dev(struct net_device *d)
2820 {
2821 struct hp100_private *p = netdev_priv(d);
2822
2823 unregister_netdev(d);
2824 release_region(d->base_addr, HP100_REGION_SIZE);
2825
2826 if (p->mode == 1) /* busmaster */
2827 pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
2828 p->page_vaddr_algn,
2829 virt_to_whatever(d, p->page_vaddr_algn));
2830 if (p->mem_ptr_virt)
2831 iounmap(p->mem_ptr_virt);
2832
2833 free_netdev(d);
2834 }
2835
2836 #ifdef CONFIG_EISA
2837 static int __init hp100_eisa_probe (struct device *gendev)
2838 {
2839 struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
2840 struct eisa_device *edev = to_eisa_device(gendev);
2841 int err;
2842
2843 if (!dev)
2844 return -ENOMEM;
2845
2846 SET_MODULE_OWNER(dev);
2847 SET_NETDEV_DEV(dev, &edev->dev);
2848
2849 err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
2850 if (err)
2851 goto out1;
2852
2853 #ifdef HP100_DEBUG
2854 printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
2855 dev->base_addr);
2856 #endif
2857 gendev->driver_data = dev;
2858 return 0;
2859 out1:
2860 free_netdev(dev);
2861 return err;
2862 }
2863
2864 static int __devexit hp100_eisa_remove (struct device *gendev)
2865 {
2866 struct net_device *dev = gendev->driver_data;
2867 cleanup_dev(dev);
2868 return 0;
2869 }
2870
2871 static struct eisa_driver hp100_eisa_driver = {
2872 .id_table = hp100_eisa_tbl,
2873 .driver = {
2874 .name = "hp100",
2875 .probe = hp100_eisa_probe,
2876 .remove = __devexit_p (hp100_eisa_remove),
2877 }
2878 };
2879 #endif
2880
2881 #ifdef CONFIG_PCI
2882 static int __devinit hp100_pci_probe (struct pci_dev *pdev,
2883 const struct pci_device_id *ent)
2884 {
2885 struct net_device *dev;
2886 int ioaddr;
2887 u_short pci_command;
2888 int err;
2889
2890 if (pci_enable_device(pdev))
2891 return -ENODEV;
2892
2893 dev = alloc_etherdev(sizeof(struct hp100_private));
2894 if (!dev) {
2895 err = -ENOMEM;
2896 goto out0;
2897 }
2898
2899 SET_MODULE_OWNER(dev);
2900 SET_NETDEV_DEV(dev, &pdev->dev);
2901
2902 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
2903 if (!(pci_command & PCI_COMMAND_IO)) {
2904 #ifdef HP100_DEBUG
2905 printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
2906 #endif
2907 pci_command |= PCI_COMMAND_IO;
2908 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2909 }
2910
2911 if (!(pci_command & PCI_COMMAND_MASTER)) {
2912 #ifdef HP100_DEBUG
2913 printk("hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name);
2914 #endif
2915 pci_command |= PCI_COMMAND_MASTER;
2916 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
2917 }
2918
2919 ioaddr = pci_resource_start(pdev, 0);
2920 err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
2921 if (err)
2922 goto out1;
2923
2924 #ifdef HP100_DEBUG
2925 printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
2926 #endif
2927 pci_set_drvdata(pdev, dev);
2928 return 0;
2929 out1:
2930 free_netdev(dev);
2931 out0:
2932 pci_disable_device(pdev);
2933 return err;
2934 }
2935
2936 static void __devexit hp100_pci_remove (struct pci_dev *pdev)
2937 {
2938 struct net_device *dev = pci_get_drvdata(pdev);
2939
2940 cleanup_dev(dev);
2941 pci_disable_device(pdev);
2942 }
2943
2944
2945 static struct pci_driver hp100_pci_driver = {
2946 .name = "hp100",
2947 .id_table = hp100_pci_tbl,
2948 .probe = hp100_pci_probe,
2949 .remove = __devexit_p(hp100_pci_remove),
2950 };
2951 #endif
2952
2953 /*
2954 * module section
2955 */
2956
2957 MODULE_LICENSE("GPL");
2958 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
2959 "Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
2960 MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
2961
2962 /*
2963 * Note: to register three isa devices, use:
2964 * option hp100 hp100_port=0,0,0
2965 * to register one card at io 0x280 as eth239, use:
2966 * option hp100 hp100_port=0x280
2967 */
2968 #if defined(MODULE) && defined(CONFIG_ISA)
2969 #define HP100_DEVICES 5
2970 /* Parameters set by insmod */
2971 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
2972 module_param_array(hp100_port, int, NULL, 0);
2973
2974 /* List of devices */
2975 static struct net_device *hp100_devlist[HP100_DEVICES];
2976
2977 static int __init hp100_isa_init(void)
2978 {
2979 struct net_device *dev;
2980 int i, err, cards = 0;
2981
2982 /* Don't autoprobe ISA bus */
2983 if (hp100_port[0] == 0)
2984 return -ENODEV;
2985
2986 /* Loop on all possible base addresses */
2987 for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
2988 dev = alloc_etherdev(sizeof(struct hp100_private));
2989 if (!dev) {
2990 printk(KERN_WARNING "hp100: no memory for network device\n");
2991 while (cards > 0)
2992 cleanup_dev(hp100_devlist[--cards]);
2993
2994 return -ENOMEM;
2995 }
2996 SET_MODULE_OWNER(dev);
2997
2998 err = hp100_isa_probe(dev, hp100_port[i]);
2999 if (!err)
3000 hp100_devlist[cards++] = dev;
3001 else
3002 free_netdev(dev);
3003 }
3004
3005 return cards > 0 ? 0 : -ENODEV;
3006 }
3007
3008 static void hp100_isa_cleanup(void)
3009 {
3010 int i;
3011
3012 for (i = 0; i < HP100_DEVICES; i++) {
3013 struct net_device *dev = hp100_devlist[i];
3014 if (dev)
3015 cleanup_dev(dev);
3016 }
3017 }
3018 #else
3019 #define hp100_isa_init() (0)
3020 #define hp100_isa_cleanup() do { } while(0)
3021 #endif
3022
3023 static int __init hp100_module_init(void)
3024 {
3025 int err;
3026
3027 err = hp100_isa_init();
3028 if (err && err != -ENODEV)
3029 goto out;
3030 #ifdef CONFIG_EISA
3031 err = eisa_driver_register(&hp100_eisa_driver);
3032 if (err && err != -ENODEV)
3033 goto out2;
3034 #endif
3035 #ifdef CONFIG_PCI
3036 err = pci_register_driver(&hp100_pci_driver);
3037 if (err && err != -ENODEV)
3038 goto out3;
3039 #endif
3040 out:
3041 return err;
3042 out3:
3043 #ifdef CONFIG_EISA
3044 eisa_driver_unregister (&hp100_eisa_driver);
3045 out2:
3046 #endif
3047 hp100_isa_cleanup();
3048 goto out;
3049 }
3050
3051
3052 static void __exit hp100_module_exit(void)
3053 {
3054 hp100_isa_cleanup();
3055 #ifdef CONFIG_EISA
3056 eisa_driver_unregister (&hp100_eisa_driver);
3057 #endif
3058 #ifdef CONFIG_PCI
3059 pci_unregister_driver (&hp100_pci_driver);
3060 #endif
3061 }
3062
3063 module_init(hp100_module_init)
3064 module_exit(hp100_module_exit)
3065
3066
3067 /*
3068 * Local variables:
3069 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
3070 * c-indent-level: 2
3071 * tab-width: 8
3072 * End:
3073 */
SocketAccessConTroL development